Which to use
“tremble” is a verb and “trouble” is a noun - they look or sound alike but fill different roles in a sentence.
- #27,681
- “tremble” frequency rank
- #1,707
- “trouble” frequency rank
- 29388
- confusion score
Side-by-Side Comparison
| Feature | tremble | trouble |
|---|---|---|
| Definition | To shake, quiver, or vibrate. | A distressing or dangerous situation. |
Where the eye mixes tremble and trouble
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence. tremble (CCVCCCV) and trouble (CCVVCCV) run the same length but a different consonant-vowel pattern - the shape difference is usually the fastest tell.
Why the eye confuses tremble with trouble
These two trip readers on the page rather than in the ear: tremble is /ˈtɹɛmbl̩/ while trouble is /ˈtɹʌb.əl/. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (verb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 29388, derived from the frequency rank of both members and their visual similarity.
tremble is recorded at frequency rank #27,681, classified as averb, pronounced /ˈtɹɛmbl̩/. trouble is at rank #1,707, tagged as anoun, pronounced /ˈtɹʌb.əl/.
Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.
With a confusion score of 29388, this pair ranks #363,422 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of tremble vs trouble
Shared letters: belrt. Private to "tremble": m. Private to "trouble": ou.
"tremble" · 7 letters · shape CCVCCCV · "trouble" · 7 letters · shape CCVVCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "tremble" for "trouble" ever safe?
In ordinary English text, does "tremble" or "trouble" show up more?
After this comparison
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "tremble" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "trouble" - compare definitions side by side with the headword page. Word entry
- This pair ranks #363,422 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "tremble" and "trouble" also get mixed up with nearby pairs, the highest-scored neighbour is "tremble vs trestle". Nearby pair
- Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes
Confusion rank #363,422 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.