Every learner meets the same fork on the very first page: an unknown word appears, and you have to decide. Stop and look it up, or read on and hope the meaning surfaces? Do it wrong in either direction and reading turns into a chore — a stop-start slog through a dictionary, or a fog of half-understood sentences. The good news is there's a simple rule of thumb.
The hidden cost of every lookup
Each time you stop to check a word, you pay twice. You lose the thread of the sentence, and you train your brain to treat reading as a translation exercise rather than an act of understanding. A page with twenty lookups isn't twenty times more educational than a page with one — it's just exhausting, and exhaustion is what makes people quit.
When a word is worth stopping for
Look it up when the word is load-bearing — when missing it means missing the sentence:
- It keeps coming back. A word you've now seen three or four times is clearly important; learn it once and collect the dividend everywhere.
- The sentence collapses without it. If you genuinely can't tell what's happening, a quick check buys back the whole paragraph.
- It's the subject or the verb. Miss a stray adjective and you'll survive; miss the action and you're lost.
When to let it go
Let it go when the word is decoration, or when context already hands you the gist. You don't need a dictionary to know that an unknown word sitting between “a delicious” and “on the table” is some kind of food. Reading is full of these free guesses, and taking them is a skill that only grows with practice.
You're not reading to understand every word. You're reading to understand the story — and the words come along for the ride.
So set yourself a loose budget: a handful of lookups per page, spent on the words that actually block you, and a shrug for the rest. Keep the story moving. The vocabulary you don't chase today you'll meet again tomorrow, in a new sentence, one step closer to being yours.