Which to use
“acid” is an adjective and “acre” is a noun - they look or sound alike but fill different roles in a sentence.
- #43,247
- “acid” frequency rank
- #28,433
- “acre” frequency rank
- 71680
- confusion score
Side-by-Side Comparison
| Feature | acid | acre |
|---|---|---|
| Definition | Acide, aigre, sur, aigri, revêche, hargneux. | Unité de surface égale à 0,4 hectare ou à 4046,9 mètres carrés, encore utilisée en agriculture et dans divers pays avec des valeurs différentes. |
Where the spellings diverge
Shared letters are muted; the letters that actually set acid and acre apart are highlighted. They share 2 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: acid is \a.ˈʦid\ while acre is \akʁ\. Spoken aloud the problem disappears. In writing it persists, because they share most of their letters but differ in 2 positions, and the parts of speech differ too (adjective vs noun), which is usually the fastest check. Our composite confusion score for this pair is 71680, derived from the frequency rank of both members and their visual similarity.
acid is recorded at frequency rank #43,247, classified as anadj, pronounced \a.ˈʦid\. acre is at rank #28,433, tagged as anoun, pronounced \akʁ\.
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 71680, this pair ranks #46,705 of 440,172 scored French confusable pairs - among the most confusable pairs.
Orthographic DNA of acid vs acre
Shared letters: ac. Private to "acid": di. Private to "acre": er.
"acid" · 4 letters · shape VCVC · "acre" · 4 letters · shape VCCV
Known mistypes of this pair
Frequency comparison
Frequently Asked Questions
Can "acid" and "acre" be used interchangeably?
Which is more common, "acid" or "acre"?
Remembering acid vs acre
The fastest way to pick the right one every time.
- Check the role first: if you need an adjective, it's “acid”; for a noun, it's “acre”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “acid” entry
- Browse more pairs most likely to be confused. Most confusable