Vocabulary that actually sticks
Rereading a word list feels like learning and mostly is not. Being made to recall a word just as you are about to forget it is what builds durable memory.
Why testing beats rereading
Two effects do most of the work, and both are well established in memory research:
- The testing effect. Retrieving something from memory strengthens it far more than seeing it again. Reading a list is recognition; a flashcard forces recall.
- The spacing effect. Reviews spread out over increasing intervals produce much better long-term retention than the same total time crammed together.
Spaced repetition is simply those two combined: test yourself, and schedule the next test just before you would have forgotten.
How the intervals work
A card you get right moves to a longer interval; a card you get wrong comes back soon.
| Review | Typical gap after a correct answer |
|---|---|
| 1st | Same day |
| 2nd | 1–3 days |
| 3rd | About a week |
| 4th | 2–4 weeks |
| 5th | 2–3 months |
The consequence people miss: most of the work is review, not new cards. If you add 20 cards a day, within a month you have 150+ reviews a day. That is the point at which most people quit — not because it is hard, but because they set the input rate too high in week one.
A system that survives month two
- Cap new cards at 5–10 a day. Boring, and it is the single change that makes the habit last. 10 a day is 3,650 words a year, which is a lot of language.
- Review every day, even when you add nothing. Skipping a day doubles tomorrow. Skipping a week is what kills the deck.
- Only make cards for words you have actually met — in a lesson, a book, a show. Words from a frequency list with no context are much harder to retain.
- One fact per card. A card asking for meaning, gender and plural at once is three cards pretending to be one, and you will fail it on the weakest part forever.
- Sentences, not bare words. Put the word in a short sentence you have seen. Context is what makes it retrievable when you need it.
- Audio on every card. Otherwise you build a vocabulary you can read and cannot hear.
- Delete ruthlessly. A card you have failed six times is a bad card, not a hard word. Rewrite it or bin it.
Paper or app
| Paper box | App | |
|---|---|---|
| Scheduling | Manual — five dividers, move cards along | Automatic, and better at it |
| Audio | No | Yes |
| Making cards | Slow, and the slowness helps memory | Fast, which tempts you to add too many |
| Reviewing anywhere | No | Yes — this is the real advantage |
| Quitting rate | Lower. Physical objects nag | Higher. Easy to ignore |
A reasonable compromise: write cards by hand, review in an app. The handwriting does memory work, the app does the scheduling.
How many words you need
- ~1,000 words — everyday survival, basic conversation
- ~3,000 words — comfortable conversation, most of a simple novel
- ~5,000 words — the news, most television
- ~10,000 words — reading widely without a dictionary
At 10 new cards a day with ordinary retention, 3,000 usable words takes about a year. That is the honest arithmetic, and it is why the cap matters more than the sprint.
Which program is worth paying for
A method only gets you so far without material. These three are the paid options most self-studiers end up choosing between, and they differ by approach rather than by quality.
| Programme | What it is | How you pay |
|---|---|---|
| Babbel | A subscription app built around short dialogue lessons with the grammar explained in plain English. | Subscription, billed monthly or for 3, 6 or 12 months at a lower rate. |
| Rocket Languages | Long audio lessons with recording drills, bought once per level rather than rented monthly. | One-time purchase per level, with payment plans. Access does not expire. |
| Rosetta Stone | The immersion method — you work out meaning from images and context instead of being given translations. | Subscription or a one-time lifetime plan, which covers all 25 languages. |
Babbel
A subscription app built around short dialogue lessons with the grammar explained in plain English.
How you pay. Subscription, billed monthly or for 3, 6 or 12 months at a lower rate.
Best for. Building a daily habit. Lessons are 10–15 minutes and the rules are spelled out rather than inferred.
Skip it if. You are learning Korean, Japanese or Chinese — Babbel does not teach them. Its 14 languages are European plus Turkish and Indonesian.
Rocket Languages
Long audio lessons with recording drills, bought once per level rather than rented monthly.
How you pay. One-time purchase per level, with payment plans. Access does not expire.
Best for. Listening and speaking. The audio lessons are long and conversational, and you record yourself against a native track.
Skip it if. You want something light to tap at on a commute, or the up-front cost is a problem.
Rosetta Stone
The immersion method — you work out meaning from images and context instead of being given translations.
How you pay. Subscription or a one-time lifetime plan, which covers all 25 languages.
Best for. Pronunciation. Its speech feedback is the most developed of the options here, and its 25 languages include Korean, Japanese and Chinese.
Skip it if. You want grammar explained in English. The method deliberately avoids it, which some people find freeing and others find maddening.
None of these replaces the routine. A programme you open three times a week beats a better one you abandon in month two — so weigh the format at least as heavily as the content.
Covers: how to learn vocabulary fast, spaced repetition study method, flashcard system for vocabulary