Which to use
“insure” is a verb and “insurer” is a noun - they look or sound alike but fill different roles in a sentence.
- #17,164
- “insure” frequency rank
- #14,343
- “insurer” frequency rank
- 31507
- confusion score
Side-by-Side Comparison
| Feature | insure | insurer |
|---|---|---|
| Definition | To provide for compensation if some specified risk occurs. Often agreed by policy (contract) to offer financial compensation in case of an accident, theft or other undesirable event. | One who insures. |
Where the spellings diverge
Shared letters are muted; the letters that actually set insure and insurer apart are highlighted. They share 6 letters in sequence, which is exactly why the eye skips the difference.
Spelling & Dictionary Insight
insure and insurer 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 extra letter(s) - “insure” sits inside “insurer” - close enough that the eye skips over the difference, far enough that meaning fully diverges. Our composite confusion score for this pair is 31507, derived from the frequency rank of both members and their visual similarity.
insure is recorded at frequency rank #17,164, classified as averb, pronounced /ɪnˈʃɔː(ɹ)/. insurer is at rank #14,343, tagged as anoun, pronounced /ɪnˈʃʊ.ɹə/.
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 31507, this pair ranks #345,525 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.
Frequency comparison
Frequently Asked Questions
Can "insure" and "insurer" be used interchangeably?
Remembering insure vs insurer
The fastest way to pick the right one every time.
- Check the role first: if you need a verb, it's “insure”; for a noun, it's “insurer”.
- See each word in full, definition, IPA, etymology and its other confusables. Full “insure” entry
- Browse more pairs most likely to be confused. Most confusable