Which to use
“firm” is a noun and “first” is an adjective - they look or sound alike but fill different roles in a sentence.
- #1,693
- “firm” frequency rank
- #81
- “first” frequency rank
- 1774
- confusion score
Side-by-Side Comparison
| Feature | firm | first |
|---|---|---|
| Definition | A business partnership; the name under which it trades. | Preceding all others of a series or kind; the ordinal of one; earliest. |
Where the spellings diverge
Shared letters are muted; the letters that actually set firm and first apart are highlighted. They share 3 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
firm and first 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 1 letter(s) in length - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 1774, derived from the frequency rank of both members and their visual similarity.
firm is recorded at frequency rank #1,693, classified as anoun, pronounced /fɜɹm/. first is at rank #81, tagged as anadj, pronounced /fɜːst/.
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 1774, this pair ranks #526,687 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.
Frequency comparison
Frequently Asked Questions
Can "firm" and "first" be used interchangeably?
Remembering firm vs first
The fastest way to pick the right one every time.
- Check the role first: if you need a noun, it's “firm”; for an adjective, it's “first”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “firm” entry
- Browse more pairs most likely to be confused. Most confusable