What is the hardest language to learn?

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It's incredible to know that there are thousands of languages spoken across the world, each with its unique set of challenges for learners. A question that often pops up is: "Which language is the hardest to learn?". Today we take a closer look at this question and consider different factors that make learning a language challenging.

What is the hardest language to learn?
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Learning a language is a complex process that involves several components, including phonetics (sounds), morphology (word formation), syntax (sentence structure), semantics (meaning), and pragmatics (communication in context). These factors all contribute to the perceived difficulty of a language.

Language Difficulty

ranks languages based on their difficulty for English speakers. Factors include similarity to English and script complexity.

FSI Language Difficulty Rankings

  • Category I: Easiest languages (e.g., Spanish, French, Italian)
  • Category II: Moderately difficult languages (e.g., German, Indonesian)
  • Category III: Difficult languages (e.g., Russian, Hebrew, Arabic)
  • Category IV: Very difficult languages (e.g., Chinese, Japanese, Korean)

In theory, you should also be able to apply this the other way around to work out how hard It would be for someone to learn English. But it isn't quite as simple as that in practice.

What about English?

Learning English can be challenging due to its irregular spelling, pronunciation and verb conjugation, despite its global dominance. However, learners have access to a wide range of resources, and the language's prevalence in media and technology makes it more accessible and easier to learn.

The English language poses a significant challenge tosecond-language English speakers due to its vast range of vowel and consonant sounds, including diphthongs, which might be unfamiliar to them. One of the well-known difficulties is the inconsistency between spelling and pronunciation. The irregularities in English spelling are infamous, making it challenging for learners to comprehend.

Another hurdle can be the extensive vocabulary, compounded by words with multiple meanings. Even more casual language and idioms can confuse and contradict basic language rules.

What can impact difficulty?

Linguists have identified aspects that can make a language more difficult to learn, such as inflectional complexity, gendered nouns, and intricate verb conjugations. There are also other factors that can impact the ease or difficulty:

Native language

The difficulty of acquiring a new language can be influenced by the learner's native language. If a language shares linguistic features with one's mother tongue, it may be easier to learn due to similarities in grammar or vocabulary. For example, someone who knows German or French may have an easier time picking up English than a Japanese speaker due to the languages having some overlap. At the same time, a Japanese speaker may have an easier time learning Chinese.

Sometimes, these similarities can be owed to the history of a language, where a language may have derived from another/the same source or intertwined at some point. English borrows a significant number of and words.

Cultural influences

Learning a new language requires understanding of both cultural and practical aspects. Adapting to different social conventions, cultural norms, and language usage in varied contexts can be challenging.

For instance, some languages have a broader range of vocabulary for different occasions and levels of formality than others. In places like Korea, your age can even determine how you're addressed, how you should speak and how you/others around you behave.

If you come from a language that shares similar norms and conventions, you will likely have an easier time picking it up.

So, what's the hardest language to learn?

There’s no straight answer for this question. Learning a language is a highly individualized experience. The difficulty of learning a language can vary significantly from person to person based on their background, motivation, and exposure to the language.

Determining the hardest language to learn can be challenging, as language learning is a personal process influenced by multiple factors. Although evidence, such as the FSI rankings and linguistic analysis, provides a foundation for comprehending language difficulty, it isn’t always the solid answer. To simplify it though, the more different the language is from your own, the harder it’ll be. Don’t let this put you off; learning a language can be a gratifying experience. Need some reasons to help you decide if you should pick up English? Give our post 'Why should I learn English?'a read.

Fancy brushing up on your language skills or picking up a new language entirely? Check out the Mondly app.

References

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    Balancing work, life, and learning: How adult learners navigate English language learning

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    For many adult learners, mastering English isn’t just about gaining a new skill—it’s about unlocking opportunities in work, family and social spheres. But juggling English lessons alongside work, family obligations and social commitments is a challenge that can feel overwhelming.

    This guide explores the unique challenges adult learners face and how educators can support them with empathy, flexibility and effective strategies.

    The challenges of learning English as an adult

    Meet Le, a 35-year-old Vietnamese project manager who dreams of working for an international company. With a demanding full-time job and two young children, finding time for English lessons feels impossible. Missing classes and struggling to complete assignments leads to frustration and self-doubt—an all-too-common experience among adult learners.

    Many adults face similar challenges:

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    • Fatigue after a long day makes it difficult to concentrate or retain information.
    • Progress feels slow, which can be demotivating.

    Without practical support, the goal of English proficiency can seem out of reach.

    Strategies for overcoming challenges

    1. Setting SMART Goals

    Educators can guide learners to set Specific, Measurable, Achievable, Relevant, and Time-bound (SMART) goals. Breaking down larger objectives into small, measurable milestones gives learners a sense of achievement. For example, app’s Global Scale of English (GSE) provides actionable “Can-do” statements, such as:

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    For learners like Le, micro-learning can easily be integrated into a work commute or lunch break.

    3. Blending learning with real-world scenarios

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    • Help learners role-play workplace conversations.
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    4. Encouraging weekly reflection

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    • Encourage learners to set weekly goals (e.g., learning new business vocabulary or practicing pronunciation for 15 minutes daily).
    • Use reflection journals to track achievements, identify challenges and adjust learning plans.

    This habit reinforces a growth mindset, helping learners make consistent progress amidst their busy schedules.

    Implementing the strategies

    Here’s how educators can apply these strategies effectively:

    1. Assess and set goals

    Work with learners to set realistic, measurable goals based on their personal motivations and schedules.

    2. Create flexible study plans

    Develop personalized study schedules that incorporate modular lessons and micro-learning techniques.

    3. Use authentic materials

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    4. Encourage accountability

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    Lesser-known differences between British and American English

    By Heath Pulliam
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    British and American English are two well-known varieties of the English language. While the accent is often the first difference people notice, there are also subtle distinctions in vocabulary, grammar and even style. Many know about how Brits say boot and lift, while Americans would say trunk and elevator, but what about a few lesser-known differences?

    Here, we take a look at a few of the more obscure differences between British English (BrE) and American English (AmE).

    Note: British English is underlined and American English isitalicized.

    1.Footballerandfootball player

    Along with the well-known difference of how in the U.S., football refers to American football, while football in Britain is what Americans like me call soccer, Americans also use player after the sport to denote someone who plays the sport. In British English, the sport with an added -er suffix is more common, like footballer and cricketer, not football player or cricket player.

    This is not universal, though. For some sports, the -er suffix is used in both dialects. Both Brits and Americans use the term golfer, not golf player. There are also sports where the -er suffix is never used, like for tennis, cycling and gymnastics. Nobody says tenniser, tennis player is used instead.

    People who cycle are cyclists and people who do gymnastics are gymnasts. Sometimes, badminton players are even called badmintonists. Overall, there aren’t really any concrete rules for what to call each player of a sport. Each sport has its own way of calling someone who participates in that sport.

    2.I dzܱ’t care lessandI could care less

    The American version (I could care less) means the same thing. Although technically incorrect, it is still widely used in North America as an idiom and will be interpreted as not caring at all about something. Although popular, both variations can be heard in North America. Regardless, miscommunications do happen surrounding this phrase.

    “I could care less about who Harry Styles is dating right now.”

    “Oh, I didn’t know you were interested in tabloid news.”

    “I’m not! I just said I didn’t care about it.”

    “No, you said that you could care less, meaning that it is possible for you to care less about who he’s dating.”

    “Ugh! What I mean is that I dzܱ’t care less. Happy?”

    3. American simplification

    Both British and American dialects are filled with many minuscule differences in spelling and phrasing. For example, the words plough (BrE) and plow (AmE) mean the same thing, but are spelled differently.

    When two words differ, American English generally favors the simpler, more phonetic spelling. Hey, there’s another one! Favour (BrE) and favor (AmE). It’s apparent in pairs like analyse (BrE) and analyze (AmE), and neighbour (BrE) and neighbor (AmE).

    Many of these small spelling differences can be attributed to Noah Webster, author of Webster’s Dictionary, who sought to distinguish American from British English by simplifying many of the words.

    Some of his simplifications to American English are swapping the s for z, (specialised to specialized), dropping the u in words ending in our, (colour to color), and changing words ending in -tre to -ter (theatre to theater).

    4. Courgette and zucchini

    The history of this vegetable, whatever you may call it, tells us why zucchini is used in American English and courgette is used in British English. If you’ve studied languages, you can probably guess what country each name originated from. England was introduced to this cylinder-shaped vegetable in the 19th century by its French neighbors, while Americans were introduced to it in the early 20th century by the large influx of Italian immigrants.

    The word zucchini is something of a mistranslation from Italian, however. What Americans use (zucchini) is the plural masculine form of the proper Italian word, (zucchino).

    5.Anticlockwiseand counterclockwise

    These terms mean the same thing, the rotation against the way a clock runs. In British English, this movement would be called anticlockwise, and in the U.S., they use counterclockwise.The prefixesanti- andcounter- mean similar things.Anti- means against, andcounter- means contrary or opposite to.

    You should use antibacterial soap in order to stop the spread of germs.Buying cheap clothes that only last you a few months is counterproductive in the long term.

    Can you guess how they described this movement before the invention of clocks with hands and circular faces? English speakers this long ago used sunwise. This direction at the time was considered auspicious and the opposite of the other direction.

    6.Haveand take

    Have and take are used often before nouns like shower, break, bath, rest and nap.In the U.S., peopletakeshowers andtakenaps, while in the U.K., peoplehaveshowers andhavenaps. Another example of this is how Americanstakea swim and Britshavea swim. These are called delexical verbs and we use them all the time in English, both British and American.

    Although often different, both groups of English speakers have arguments, make decisions and take breaks.

    7.Quite

    This word is spelled the same in both American and British English, but means something different. In the U.S.,quiteis typically used as an intensifier, like the wordvery.In the U.K., it’s normally used as a mitigator, like the wordsomewhat.

    It can also mean completely if it modifies certain adjectives. (e.g., It’s quite impossible to learn a language in one month.)

    American English: That Mexican food we had yesterday was quite spicy.

    Translation: That Mexican food we had yesterday was very spicy.

    In British English, quite means something more on the lines of kind of, or a bit.

    British English: Thank you for the meal, it was quite good.

    Translation: Thank you for the meal, it was somewhat good.

    8. Clothing differences

    The category of clothes is one of the richest, with differences between the two English variants.How about those pants that people used to only wear at the gym and around the house, but now wear them everywhere?

    Brits call themtracksuit bottomsand Americans call themsweatpants. What about a lightweight jacket that protects from wind and rain?Brits might call this ananorak(derived from the Greenlandic word), but Americans would call it awindbreaker. Both variants also useraincoatfor this article of clothing.

    9.Torchandflashlight

    As an American, I’ve been confused before when coming across the word torch while reading the work of an English author.

    To Americans, a torch is a piece of wood with the end lit on fire for light.What Brits are referring to when they use the wordtorchis aflashlight (AmE), a small, battery-run electric lamp.

    10.’t and don’t need to

    Ah, the English contraction. Many English learners don’t particularly love learning these, but they are an essential and everyday part of the language. ’t, however, is one that I don’t think I’ve ever heard another American say.

    In the U.K., this contraction is fairly common. ’t, when separated, becomes need not.

    British English: “You needn’t come until Tuesday night.”

    Americans would say the relatively simpler don’t need to.

    American English: “You don’t need to come until Tuesday night.”

    Don’t be fooled into thinking British English has necessarily more difficult contractions than the U.S., though. Just come to the American South and prepare to hear famous (or infamous) contractions like y’all (you all) and ain’t (am not, is not, are not)!

    Conclusion

    There are hundreds of differences between British and American dialects, we’re only scratching the surface here.Some of these make more sense than others, but luckily, both Brits and Americans can usually understand the meaning of any English word through context.

    Some people would even say that Brits speak English while Americans speak American.Although each dialect from across the pond seems very different, they have far more similarities than differences.