The best way to learn Korean vocabulary

Korean grammar has a reputation for being the hard part, and for a few weeks it is. Then you understand the sentence structure perfectly and still cannot follow the conversation, because you do not know enough words. Vocabulary never stops mattering, and it decays if you leave it alone.

This page covers what works, why it works, and how the popular tools compare. We make one of them, so treat the comparison accordingly. We have described each the way its own users would.

Memory fades on a curve, and the curve resets each time you successfully recall something, flatter than before. Review a word an hour after learning it and you hold it for a day. Review it again then and it lasts a week. Each successful recall buys a longer interval, which is why a schedule beats rereading: rereading feels productive while the curve keeps falling underneath it.

A spaced repetition system automates the timing. It tracks how well you know each word and puts it back in front of you at the last useful moment, which is also the most efficient one. The intervals below are the real schedule this course uses, from a word's first appearance to the point where it stops coming back.

Miss a word and it drops back down the ladder. Your time goes to the words you keep getting wrong rather than the ones you already know, and a word you have never missed eventually stops asking for anything.

Word frequency is steep in every language: a small set of words accounts for a large share of everything said. Learning in frequency order puts your earliest effort on the words most likely to turn up in the next sentence you hear, which is what makes early progress feel like progress rather than homework.

This matters more in Korean than in Japanese or Chinese, because Korean has no script mountain to climb. The alphabet takes an afternoon, so there is no long stretch of learning the writing system and picking up vocabulary as a side effect. From about day two, vocabulary is the entire task, and the order you meet words in decides how it goes.

So avoid thematic word lists that teach you sixty animals before you can say “because”. Colours and zoo animals are satisfying to learn and rare in real speech.

This is the closest thing Korean has to the kanji advantage, and most beginners never hear about it. Most headwords in the National Institute of Korean Language's standard dictionary are Sino-Korean, each root written as a single Korean syllable, and those roots recombine the way Latin roots do in English. Once you notice the pattern, new words stop being random.

You do not need to study hanja for this. Nobody is asking you to write 學. Just notice when a syllable you already know shows up in a new word: the guess is usually right, and a guess you confirm sticks better than a fact you were handed.

The other technique worth the effort is learning each word inside a sentence rather than beside an English gloss. A word alone gives you a translation. A word in a sentence gives you the particle it takes, the verb it goes with, and a situation to hang it on. That is why every word in this course ships with example sentences and native audio rather than a bare definition.

This is the failure mode that catches people months in. Multiple choice and matching test whether you can pick a word out of a lineup, and you can pass them consistently while being unable to produce the word when you need it. The knowledge is real but it only works in one direction.

Korean adds a second trap. Its spelling preserves the underlying letters while the pronunciation smooths them out, so words routinely sound different from how they are written. A learner who only ever reads will recognise 좋아요 without hesitation and then write it like this:

The word sounds right. The silent ㅎ is missing, and no amount of recognition practice would have caught it, because recognition never asked for the spelling. Typing does, which is why this course tests every word both ways: meaning in English, then the word itself in Korean.

Anki is the most capable spaced repetition tool that exists, and for a learner with a specific goal like a fixed exam word list, nothing else compares. Its flexibility is a cost as well as a feature. A shared Korean deck may have been assembled by someone with different priorities, no audio, and glosses that do not distinguish between words that look alike, and you will not find out until you are twenty levels in.

If you have abandoned study before because you spent the evening configuring rather than learning, that tells you which kind of tool suits you.

None of that makes it a bad app. It is very good at what it is for, getting someone from nothing to a daily habit, and a daily habit is worth a lot. The mismatch shows up later, when you have a streak measured in hundreds and a vocabulary that stalls short of holding a conversation.

If that is where you are, the fix is not more of the same. It is producing the words from memory.

Fifteen minutes a day beats two hours every Sunday, because spaced repetition depends on hitting the right moment rather than on total hours. Missing a day is survivable; the schedule catches up with you.

A concrete number: a level a week through a sixty level course of about 5,300 words takes a little over a year, at a comfortable pace rather than a punishing one. The alphabet takes an afternoon, so almost none of that time goes on the writing system. It is all words, which is where the time should go.