Learning vocabulary effectively: methods that stick

Learning vocabulary: why we forget so quickly

Forgetting is not a defect but a function of memory. The brain filters out what it has seen only once and apparently does not need. A word you read once in a list has little chance. A word you meet again and again at intervals, and that you have to recall actively, is marked as important.

This leads to the two most important principles of vocabulary learning:

• Space it out instead of cramming: spread your reviews over days and weeks rather than learning everything in one evening.
• Recall instead of rereading: actively retrieve the word from memory rather than simply reading it again.

Both principles are well researched. A large review by Cepeda and colleagues (Psychological Bulletin, 2006) analysed 839 comparisons from 317 experiments on spaced learning. One finding: the longer you want to remember something, the longer the gaps between reviews should be. For language learners, this means that if you want to keep vocabulary for good, you need increasing review intervals.

We apply these principles in our language courses for individuals too, by bringing new words back deliberately in the following lessons.

How does the Leitner system with flashcards work?

The Leitner system applies spaced repetition with paper flashcards in a five-compartment box. You review compartment 1 daily, compartment 2 every two to three days, compartment 3 weekly, compartment 4 every two weeks and compartment 5 monthly. Cards you know move up one compartment; cards you do not know go back to compartment 1.

Be honest when you test yourself. Only count a card as known if the expression came to you completely and without long hesitation. “I almost had it” goes back to compartment 1. This feels strict at first, but it ensures that the words are available later in conversation, under time pressure.

The trick is that you review difficult words often and easy ones rarely. That way you invest your time exactly where it is needed.

The digital alternative

Flashcard apps with a spaced repetition algorithm, such as Anki, calculate the intervals automatically. The advantage is that you can add audio, images and example sentences and learn on the go. The disadvantage is that downloaded ready-made decks often contain words you will never need. Cards you create yourself work better, because making them is already a learning session.

Learning English vocabulary in chunks rather than word by word

Learn English vocabulary as chunks, fixed combinations such as to make a decision or to take a photo, not isolated word pairs. Then you know in conversation which verb goes with the noun, and you avoid literal translations such as to meet a decision. Chunks matter most with phrasal verbs such as to put off.

A common mistake is to learn isolated word pairs such as decision = Entscheidung. That does not help much in conversation, because you do not know which verb goes with it. In German you “meet” a decision (eine Entscheidung treffen); in English you make one.

So learn word combinations, known as chunks or collocations. The table shows typical traps for German speakers; learners with other first languages fall into very similar ones.

Quick exercise: make, do, take or have?

1. Could you ___ a look at my report?
2. I need to ___ a phone call.
3. She ___ a lot of overtime last month.
4. Let’s ___ a quick coffee before the meeting.
5. We ___ good progress this week.

Answers: 1. take (or have), 2. make, 3. did, 4. have (or grab), 5. made. If you hesitated here, collocations with these four verbs are a worthwhile set for your flashcard box.

Chunks are especially important with phrasal verbs such as to put off (to postpone) or to come up with (to think of an idea). Our article on phrasal verbs in English (in German) gives a detailed overview.

What a good vocabulary card looks like

• Front: a sentence in your first language with a gap, or the meaning of the chunk
• Back: the English chunk, an example sentence from your own life and, if useful, the phonetic transcription
• Example: “Wir müssen das Meeting verschieben.” / We need to put off the meeting. Alternatively: We need to postpone the meeting.

Which vocabulary learning methods work best?

Spaced repetition and active recall work best, supported by your own example sentences, memory aids for difficult single words, word families such as decide, decision, decisive, reading and listening to authentic texts, and speaking out loud. Not every method suits everyone, but combining several methods strengthens the effect.

Memory aids that work

• to borrow vs to lend: you borrow from someone and bring it back; you lend something and let it go for a while.
• stationary (not moving) vs stationery (paper, pens): “e” as in “envelope”.
• affect (verb) vs effect (noun): “Action” is the verb, “End result” is the outcome.

How many words should you learn per day?

For most working people, five to ten new chunks a day is realistic, with 10 to 20 minutes of study time. More is not better: if you learn 50 new words a day, you will have 350 cards to review after a week and give up exhausted. What matters is the amount you can keep reviewing over time.

These figures are based on experience, not fixed standards. They assume that you also complete the reviews that are due every day, which over time take up most of your study time. For most working people, five to ten new chunks a day is a realistic figure that can be sustained for months.

Which words first?

1. words you need this week (work, travel, your course)
2. common everyday words you are missing
3. words you have come across several times while reading or listening
4. rare words only if they are central to your field

How much study time you can expect overall is covered in our article How long does it take to learn English?

Common vocabulary learning mistakes: false friends and more

The most typical mistake for German speakers is false friends: words that look familiar but mean something else, such as to become (werden, not bekommen) or eventually (in the end, not „eventuell“). Then there are mistakes in method: learning in one direction only, copying lists instead of recalling, using generic lists and ignoring pronunciation.

If you work with German-speaking colleagues, this table also explains some of the English you may hear in the office.

More pitfalls are collected in our article on false friends and typical mistakes German speakers make (in German).

Mistakes in method

• Learning in one direction only: if you only practise from English into your own language, you will recognise words but not be able to use them. Practise the other direction too.
• Copying lists instead of recalling: copying feels productive but achieves little.
• Generic lists with no connection to your life: “The 1,000 most important words” contain many you do not need.
• Ignoring pronunciation: if you pronounce a word wrongly, you will not recognise it when you hear it. Always listen to new words, for example in the Cambridge Dictionary.

Learning vocabulary in everyday life: context, series and AI

Flashcards are the framework, but words only come alive in real texts. Three sources are particularly productive: series and podcasts, whose vocabulary repeats itself; professional texts from your industry, from which you mark no more than ten chunks per text; and AI, which creates collocation lists, example sentences and quizzes that you should spot-check.

Series and podcasts

Long-running series have a limited, repetitive vocabulary. If you watch a whole season, you will meet many words several times, which is ideal for remembering them. How to learn actively while you watch is explained in learning English with series and podcasts.

Professional texts

Articles, newsletters and presentations from your industry provide exactly the words you need. Mark no more than ten chunks per text; anything beyond that will not be learnt. For everyday working life, our collection of Business English phrases is also worth a look.

AI as a vocabulary trainer

Language models can create collocation lists, example sentences and quizzes for your words on request. Spot-check the results and keep only what you really need. You will find specific prompts in learning English with AI.

Vocabulary study plan: four weeks to try it out

The four-week plan combines the most important methods, takes about 20 minutes a day and builds up from five to eight new chunks daily. In week 1 you set up your flashcard box or app, in week 2 you write and say your own sentences, then you spot learnt words in texts and finally use them actively.

After four weeks you will have around 200 chunks in your system, and many of them will be firmly in place. More important than the number is that you can actually recall the words when you speak. That is what we practise in lessons: in our English courses for adults, teachers bring your vocabulary back in role plays and conversations. You will find general English courses under English courses online, and job-related vocabulary in our Business English courses. If you have any questions, please use our contact page.

Sources

1. pubmed.ncbi.nlm.nih.gov
2. apps.ankiweb.net
3. dictionary.cambridge.org

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