Which to use
“thinner” is an adjective and “thunder” is a noun - they look or sound alike but fill different roles in a sentence.
- #13,826
- “thinner” frequency rank
- #5,744
- “thunder” frequency rank
- 19570
- confusion score
Side-by-Side Comparison
| Feature | thinner | thunder |
|---|---|---|
| Definition | comparative form of thin: more thin | The loud rumbling, cracking, or crashing sound caused by expansion of rapidly heated air around a lightning bolt. |
Where the eye mixes thinner and thunder
Muted = shared; highlighted = the visual trap. They share 5 letters in sequence.
Why the eye confuses thinner with thunder
These two trip readers on the page rather than in the ear: thinner is /ˈθɪnə(ɹ)/ while thunder is /ˈθʌndə/. 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 (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 19570, derived from the frequency rank of both members and their visual similarity.
thinner is recorded at frequency rank #13,826, classified as anadj, pronounced /ˈθɪnə(ɹ)/. thunder is at rank #5,744, tagged as anoun, pronounced /ˈθʌndə/.
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 19570, this pair ranks #437,241 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Orthographic DNA of thinner vs thunder
Shared letters: ehnrt. Private to "thinner": i. Private to "thunder": du.
"thinner" · 7 letters · shape CCVCCVC · "thunder" · 7 letters · shape CCVCCVC
Known mistypes of this pair
Frequently Asked Questions
Do "thinner" and "thunder" mean the same thing in a sentence?
In ordinary English text, does "thinner" or "thunder" show up more?
What to do next
Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.
- Full dictionary entry for "thinner" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "thunder" - compare definitions side by side with the headword page. Word entry
- This pair ranks #437,241 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "thinner" and "thunder" also get mixed up with nearby pairs, the highest-scored neighbour is "tenner vs thinner". 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 #437,241 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.