Which to use
“adverse” is an adjective and “adversely” is an adverb - they look or sound alike but fill different roles in a sentence.
- #8,382
- “adverse” frequency rank
- #20,279
- “adversely” frequency rank
- 28661
- confusion score
Side-by-Side Comparison
| Feature | adverse | adversely |
|---|---|---|
| Definition | Unfavorable; antagonistic in purpose or effect; hostile; actively opposing one's interests or wishes; contrary to one's welfare; acting against; working in an opposing direction. | In an adverse manner. |
Letter map: adverse vs adversely
Shared letters muted; letters that set adverse and adversely apart highlighted. Shared run: 7. adverse runs 7 letters (VCCVCCV) against adversely's 9 (VCCVCCVCV) - the length gap alone is often enough to separate them once you know to check it.
Role in the sentence - adverse and adversely
Our dataset has no pronunciation recorded for both members, so the reliable separator here is grammatical: adverse is anadjective and adverselyanadverb. On the page they differ by 2 extra letter(s) - “adverse” sits inside “adversely”. Our composite confusion score for this pair is 28661, derived from the frequency rank of both members and their visual similarity.
adverse is recorded at frequency rank #8,382, classified as anadj, pronounced /ˈæd.və(ɹ)s/. adversely is at rank #20,279, tagged as anadv.
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 28661, this pair ranks #369,327 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Orthographic DNA of adverse vs adversely
Shared letters: adersv. Private to "adverse": -. Private to "adversely": ly.
"adverse" · 7 letters · shape VCCVCCV · "adversely" · 9 letters · shape VCCVCCVCV
Known mistypes of this pair
Frequently Asked Questions
Is swapping "adverse" for "adversely" ever safe?
Frequency check: "adverse" vs "adversely" - which ranks higher?
Useful next steps
Done with this confusable. These links stay specific to "adverse" and "adversely".
- Full dictionary entry for "adverse" with definition, IPA, and generated misspellings. Word entry
- Full dictionary entry for "adversely" - compare definitions side by side with the headword page. Word entry
- This pair ranks #369,327 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
- "adverse" and "adversely" also get mixed up with nearby pairs, the highest-scored neighbour is "adverb vs adverse". 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 #369,327 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.