Which to use
“retroactive” is an adjective and “retroactively” is an adverb - they look or sound alike but fill different roles in a sentence.
- #32,157
- “retroactive” frequency rank
- #31,321
- “retroactively” frequency rank
- 63478
- confusion score
Side-by-Side Comparison
| Feature | retroactive | retroactively |
|---|---|---|
| Definition | Extending in scope, effect, application or influence to a prior time or to prior conditions | Done after the fact; applying to events that have previously transpired. |
Where the spellings diverge
Shared letters are muted; the letters that actually set retroactive and retroactively apart are highlighted. They share 11 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
These two trip readers on the page rather than in the ear: retroactive is /ˌɹɛt.ɹəʊˈæk.tɪv/ while retroactively is /ˌɹɛtɹoʊˈæktɪvli/. Spoken aloud the problem disappears. In writing it persists, because they differ by 2 extra letter(s) - “retroactive” sits inside “retroactively”, and the parts of speech differ too (adjective vs adverb), which is usually the fastest check. Our composite confusion score for this pair is 63478, derived from the frequency rank of both members and their visual similarity.
retroactive is recorded at frequency rank #32,157, classified as anadj, pronounced /ˌɹɛt.ɹəʊˈæk.tɪv/. retroactively is at rank #31,321, tagged as anadv, pronounced /ˌɹɛtɹoʊˈæktɪvli/.
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 63478, this pair ranks #82,741 of 530,003 scored English confusable pairs - among the most confusable pairs.
Orthographic DNA of retroactive vs retroactively
Shared letters: aceiortv. Private to "retroactive": -. Private to "retroactively": ly.
"retroactive" · 11 letters · shape CVCCVVCCVCV · "retroactively" · 13 letters · shape CVCCVVCCVCVCV
Known mistypes of this pair
- retroactive ← ertroactive · rertoactive · retoractive · retraoctive · retroacctive · retroacitve · retroactiev · retroactivve
- retroactively ← ertroactively · rertoactively · retoractively · retraoctively · retroacctively · retroacitvely · retroactievly · retroactivelly
Frequency comparison
Frequently Asked Questions
Can "retroactive" and "retroactively" be used interchangeably?
Which is more common, "retroactive" or "retroactively"?
Remembering retroactive vs retroactively
The fastest way to pick the right one every time.
- Check the role first: if you need an adjective, it's “retroactive”; for an adverb, it's “retroactively”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “retroactive” entry
- Browse more pairs most likely to be confused. Most confusable