Which to use
“useful” is an adjective and “usefully” is an adverb - they look or sound alike but fill different roles in a sentence.
- #1,973
- “useful” frequency rank
- #48,545
- “usefully” frequency rank
- 50518
- confusion score
Side-by-Side Comparison
| Feature | useful | usefully |
|---|---|---|
| Definition | Having a practical or beneficial use. | In a useful manner; in a way that achieves something |
Where the spellings diverge
Shared letters are muted; the letters that actually set useful and usefully apart are highlighted. They share 6 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
useful and usefully form a confusable pair in the English index, two distinct headwords that are easily confused because they look alike, sound alike, or both. They differ by 2 extra letter(s) - “useful” sits inside “usefully” - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 50518, derived from the frequency rank of both members and their visual similarity.
useful is recorded at frequency rank #1,973, classified as anadj, pronounced /ˈjuːsfl̩/. usefully is at rank #48,545, 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 50518, this pair ranks #173,550 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "useful" and "usefully" be used interchangeably?
Remembering useful vs usefully
The fastest way to pick the right one every time.
- Check the role first: if you need an adjective, it's “useful”; for an adverb, it's “usefully”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “useful” entry
- Browse more pairs most likely to be confused. Most confusable