Open a real news article in a language you're still learning and you'll likely hit an unfamiliar word within the first sentence or two. The instinct, especially if you're coming from an app that rewards precision, is to stop and look it up immediately. Do that every time and a five-minute article becomes a thirty-minute vocabulary exercise, and most people who try this quit the habit within a week, not because the language is too hard, but because the process stopped feeling like reading at all.
There's a better default, and it's a specific, learnable rule rather than vague advice to "just relax about it."
The actual rule: does this word block the sentence, or just narrow it
Before reaching for a dictionary, ask one question: without this word, do I still know roughly what's happening in this sentence, or is the sentence meaningless without it?
If a word is decorative or specific, an adjective describing a quality, a proper noun, a technical detail, you can usually keep the sentence's core meaning without it. "The [unfamiliar adjective] building collapsed after the storm" still tells you a building collapsed after a storm; the specific quality you missed is a detail, not the point. Keep reading.
If a word is load-bearing, a main verb, a key connector that changes what kind of clause you're in, the sentence genuinely falls apart without it. "The company [unfamiliar verb] its main competitor" leaves you not knowing if the company acquired, sued, or lost to its competitor, and those are different stories. That's worth a look-up.
This single distinction, decorative versus load-bearing, does more to keep reading sessions sustainable than any general advice to "tolerate ambiguity," because it gives you an actual decision rule instead of a vague feeling you have to talk yourself into every time.
Let repetition do the work dictionaries can't
A word that showed up once and didn't block your sentence might show up again three paragraphs later, in tomorrow's reading, or in a different article on a related topic next week. Real news text repeats vocabulary constantly within a topic area, because writers reuse the same terms across related stories. A word you let go unlooked-up the first time often becomes clear from context the second or third time you see it, at which point you've learned it the way you actually learn vocabulary in your native language: from repeated exposure in context, not from a single dictionary definition you'll likely forget by tomorrow anyway.
This means skipping a word isn't a lost opportunity to learn it. It's often a more durable way to learn it than looking it up once and moving on, because a single look-up produces weak, short-lived recall compared to meaning that gets reinforced across several real encounters.
When to actually stop and look something up
The rule above isn't "never look anything up." Some words are worth the interruption: recurring words that block comprehension every time they appear, words central to the specific topic you're reading about that you expect to see again, and any word where the sentence's core meaning is genuinely inaccessible without it. The point isn't zero look-ups, it's making look-ups a deliberate, occasional choice rather than an automatic reflex triggered by every unfamiliar word on the page.
What this feels like once it becomes a habit
At first, deciding whether a word is decorative or load-bearing takes conscious effort, and it will slow you down slightly compared to either extreme, looking up everything or ignoring everything. Within a few weeks of practicing it deliberately, the distinction starts happening close to automatically, the same way a native reader skips over unfamiliar jargon in an unfamiliar domain without consciously deciding to. That's the actual skill this builds: not vocabulary itself, but the judgment to keep moving through real text the way real readers do, imperfectly and without needing full precision on every word to get the story.
Why this is genuinely how native readers already operate
It's worth naming directly that native readers skip unfamiliar words constantly too, technical jargon outside their field, a proper noun they don't recognize, a rare word used once. Native fluency was never about knowing every word encountered; it's about having enough surrounding comprehension and confidence to keep going without that full knowledge derailing the read. Learners often hold themselves to a stricter, unrealistic standard than any native reader actually meets, treating an unfamiliar word as a personal failure rather than the completely ordinary experience it is for everyone reading real, unedited text, in any language, at any level of fluency.
A quick way to practice the decision itself
If the decorative-versus-load-bearing distinction feels hard to apply in the moment, practice it explicitly for one short session: read a paragraph, and for every unfamiliar word, pause just long enough to silently label it "decorative" or "load-bearing" before deciding whether to look it up, without actually looking anything up yet. This turns an implicit judgment into an explicit one you can get faster at, the same way naming a skill out loud a few times before doing it automatically tends to speed up how quickly it becomes second nature. A few sessions of this deliberate labeling is usually enough to make the judgment feel much more natural in ordinary reading afterward, and most learners stop needing the exercise consciously within a week or two of trying it.