Which to use
“bitterly” is an adverb and “butterfly” is a noun - they look or sound alike but fill different roles in a sentence.
- #19,768
- “bitterly” frequency rank
- #7,891
- “butterfly” frequency rank
- 27659
- confusion score
Side-by-Side Comparison
| Feature | bitterly | butterfly |
|---|---|---|
| Definition | In a bitter manner. | A flying insect of the order Lepidoptera, distinguished from moths by their diurnal activity and generally brighter colouring. |
Where the eye mixes bitterly and butterfly
Muted = shared; highlighted = the visual trap. They share 7 letters in sequence. bitterly runs 8 letters (CVCCVCCV) against butterfly's 9 (CVCCVCCCV) - the length gap alone is often enough to separate them once you know to check it.
Visual trap between bitterly and butterfly
These two trip readers on the page rather than in the ear: bitterly is /ˈbɪtəɹli/ while butterfly is /ˈbʌ.tə(ɹ).flaɪ/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adverb vs noun), which is usually the fastest check. Our composite confusion score for this pair is 27659, derived from the frequency rank of both members and their visual similarity.
bitterly is recorded at frequency rank #19,768, classified as anadv, pronounced /ˈbɪtəɹli/. butterfly is at rank #7,891, tagged as anoun, pronounced /ˈbʌ.tə(ɹ).flaɪ/.
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 27659, this pair ranks #377,184 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of bitterly vs butterfly
Shared letters: belrty. Private to "bitterly": i. Private to "butterfly": fu.
"bitterly" · 8 letters · shape CVCCVCCV · "butterfly" · 9 letters · shape CVCCVCCCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "bitterly" for "butterfly" ever safe?
In ordinary English text, does "bitterly" or "butterfly" 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 "bitterly" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "butterfly" - compare definitions side by side with the headword page. Word entry
- This pair ranks #377,184 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "bitterly" and "butterfly" also get mixed up with nearby pairs, the highest-scored neighbour is "bitterly vs buttery". 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 #377,184 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.