The Most Efficient Way to Grow Your English Vocabulary

First, the trap

Most people default to memorizing word lists. Learn the list, remember the words, and your vocabulary goes up — that's the assumption.

It doesn't really work that way. Memorizing words has a few problems. First, it's tedious and inefficient. Second, even after you've memorized a word, you may not actually understand it when you meet it in a real sentence. I think many of you know exactly what I mean — every word in the sentence looks familiar, yet somehow the sentence just doesn't make sense.

It's also hard to stick with. Slowly you start to resent the whole thing, wondering whether you simply have no gift for languages, and when — if ever — you'll get there.

And finally: memorizing a word doesn't mean you can use it. When you actually need it, the right word often won't come to mind.

The root cause: you memorized the word, but you never truly acquired it.

Think about the words you genuinely know. Aren't they words like apple and banana? You know them because you've met them so many times. The words that rarely show up in your life — those fade not long after you memorize them.

What I did instead

I used to be part of the word-list crowd too. I picked English up and dropped it more times than I can count. Then, four years ago, after leaving my job — resting and looking for a new direction — I started learning English again. A video by Luoxiaoni, a learning creator on Bilibili (a Chinese video platform), introduced me to comprehensible input and the i+1 theory. That's when I learned the real way to grow vocabulary: listen and read a lot, and build words up through massive amounts of context. Not memorizing — noting down the new words you meet and trying to understand them.

Around that time I set aside the traditional bilingual dictionaries I'd grown up with and switched to the Cambridge Dictionary online, using English definitions plus example sentences to understand. Sometimes I'd search Google Images too, letting a picture deepen the impression.

It worked well. The problem was that every lookup meant jumping out of whatever I was reading, switching back and forth. My train of thought kept getting cut, and it drained the mood out of reading.

So later I built my own English reading tool to solve my own pain. I like using English to learn English — building the habit of thinking in English rather than leaning on translation into my native language.

So the first core idea of this tool is to make lookups never interrupt your reading:

• Hit a new word, tap it, and the explanation appears. No jumping out, no switching to another app.
• It uses the context of the sentence to give you only the meaning that fits right there — instead of dumping ten definitions on you, like a traditional dictionary, and leaving you to guess which one applies.
• The difficulty of the explanation follows your English level. If you're at B1, it explains in words a B1 reader can understand, rather than defining a hard word with harder words. (You've surely been there: you look up one word, and three more unknown words show up in the definition — the deeper you dig, the more lost you get.)
• English explanations by default, with an optional native-language version alongside. I keep mine English-only, to push myself to understand English in English.

There's another situation you've definitely run into: you know every word in a sentence, but strung together it makes no sense. For long, tangled sentences like that, you can have AI restate the sentence in simpler terms and take the structure apart — understand the meaning first, then go back to the original.

As I kept building, I realized that what actually grew my vocabulary wasn't any single feature. It was a whole method. Here's how I'd lay it out.

1. Read what genuinely interests you

Interest is what decides whether you keep going. Only content you love will keep you reading; and the more you read, the more words you meet.

That's why I didn't build "graded readers" or textbook-style material. Instead, you bring in whatever you love to read — English ebooks (EPUB), web articles, even podcast transcripts — all into one place. Whatever you love reading is your best learning material.

2. Lots of input — and it has to be comprehensible

To me this is the most useful piece of Krashen's theory: what you need isn't harder material, it's material you can just about understand — roughly 95% words you already know, with the remaining 5% new (that's the famous i+1).

Too hard, and you can't get through it — you're looking words up the entire time and the frustration maxes out. Too easy, and there's nothing new to learn. Keep yourself in the zone of "understandable, but slightly challenging." That's where vocabulary grows, bit by bit.

3. Don't memorize — look words up as you meet them, but look them up right

When you hit a new word: note it, look it up, understand it, keep reading. The key is looking it up right:

Understand the word in its current context, at a difficulty you can actually follow, in English first. This is exactly why I built lookups the way I described above — it takes care of the two biggest traps of traditional dictionaries: ten meanings for you to guess from, and definitions harder than the word itself.

4. Let new words keep "reuniting" with you in different contexts

Looking a word up isn't the end.

Every word you look up goes into your word book automatically — together with the original sentence you were reading at the time. Later, when the word appears in another article, it gets highlighted automatically. You meet it again and again in different contexts, and it sticks naturally. No rote drilling needed.

This is the part users tell me they love most: the same word lights up across several books — "oh, it's you again" — and after a few of those, you genuinely know it.

5. When it's time to review, still don't "memorize"

Some words simply don't show up often enough, and you forget them. That's when review comes in — but review shouldn't mean staring at flashcards and grinding either.

The review feature I built runs on the FSRS spaced repetition algorithm, reminding you only when you're about to forget. What matters more is how you review: it takes a batch of your due words and weaves them into a short English passage slightly above your level (i+1 again), so you re-encounter them in connected context, then confirm each word after reading.

Meet the words again in reading first, then confirm — it sticks far better than isolated flashcards. And whether you marked those words on your phone, tablet, computer, e-ink device, or in a browser, whether they came from an ebook, a web page, or a podcast transcript, they all flow into one place for review.

By the way: listening counts as input too

I haven't dropped the "listen" half of "listen and read a lot." While reading, select a sentence and AI reads it aloud so you can hear the pronunciation. With podcasts, you can read along while listening and tap the transcript to look words up. A different sense, the same word met one more time — the impression runs deeper.

This is why I built SentiaRead

By this point, the tool is SentiaRead — a reading app that helps you learn English naturally through the content you love.

The whole method above, it basically puts into practice for you: gathering your favorite content in one place, tap-to-look-up, AI explanations tuned to your level and the context, new words collected automatically and highlighted across everything you read, and when review is due, a short passage that brings you back to the words in context.

It runs on iPhone, iPad, Android, macOS, Windows, and as a Chrome extension. Mark once, synced everywhere — your library, word book, and reading progress sync automatically across all your devices. Read half a chapter on your Mac, pull out your phone on the commute, and pick up right where you left off.

I also deliberately skipped the Duolingo-style streak pressure, where one missed day resets the count. I'd rather you focus on the progress you accumulate day by day. It's free to start, and the AI features run on a transparent credit system — you always know where your credits went.

The last thing I want to say is the flip side of the opening line:

Vocabulary isn't "memorized" into existence. It's read into existence — met, again and again, in context. The more you read, the more words you know, and the less you need to review.

If you're also tired of the memorize-then-forget loop, come give it a try. Start over with content you love.

👉 Website: https://sentiaread.com