Which to use
“incredible” is an adjective and “incredibly” is an adverb - they look or sound alike but fill different roles in a sentence.
- #2,351
- “incredible” frequency rank
- #3,761
- “incredibly” frequency rank
- 6112
- confusion score
Side-by-Side Comparison
| Feature | incredible | incredibly |
|---|---|---|
| Definition | Too implausible to be credible; beyond belief. | In an incredible manner; not to be believed. |
Where the spellings diverge
Shared letters are muted; the letters that actually set incredible and incredibly apart are highlighted. They share 9 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
incredible and incredibly 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 a single letter - e in “incredible” becomes y in “incredibly” - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 6112, derived from the frequency rank of both members and their visual similarity.
incredible is recorded at frequency rank #2,351, classified as anadj, pronounced /ɪŋˈkɹɛdɪbəl/. incredibly is at rank #3,761, tagged as anadv, pronounced /ɪŋˈkɹɛdɪbli/.
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 6112, this pair ranks #512,708 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Frequency comparison
Frequently Asked Questions
Can "incredible" and "incredibly" be used interchangeably?
Remembering incredible vs incredibly
The fastest way to pick the right one every time.
- Check the role first: if you need an adjective, it's “incredible”; for an adverb, it's “incredibly”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “incredible” entry
- Browse more pairs most likely to be confused. Most confusable