inquirevsinsureWhat's the difference?

Which to use

“inquire” and “insure” are a confusable English pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#17,646
“inquire” frequency rank
#17,164
“insure” frequency rank
34810
confusion score

Side-by-Side Comparison

Feature inquire insure
Definition To ask (about something). 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.

Where the spellings diverge

Shared letters are muted; the letters that actually set inquire and insure apart are highlighted. They share 5 letters in sequence, which is exactly why the eye skips the difference.

7 ch
inquire
6 ch
insure

Spelling & Dictionary Insight

A purely visual mix-up. inquire (/ɪnˈkwaɪə/) and insure (/ɪnˈʃɔː(ɹ)/) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they differ by 1 letter(s) in length. Our composite confusion score for this pair is 34810, derived from the frequency rank of both members and their visual similarity.

inquire is recorded at frequency rank #17,646, classified as averb, pronounced /ɪnˈkwaɪə/. insure is at rank #17,164, tagged as averb, pronounced /ɪnˈʃɔː(ɹ)/.

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 34810, this pair ranks #317,488 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of inquire vs insure

Shared letters: einru. Private to "inquire": q. Private to "insure": s.

"inquire" · 7 letters · shape VCCVVCV  ·  "insure" · 6 letters · shape VCCVCV

Known mistypes of this pair

  • inquireinnquire · inqiure · inqquire · inquier · inquirre · inqurie · inuqire · iqnuire
  • insureinnsure · insrue · inssure · insuer · inusre · isnure · nisure

Frequency comparison

inquire#17,646
insure#17,164

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "inquire" and "insure" be used interchangeably?
No. They are said differently (/ɪnˈkwaɪə/ versus /ɪnˈʃɔː(ɹ)/) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Which is more common, "inquire" or "insure"?
"insure" is the more common of the two: it sits at frequency rank #17,164 in our English list, against #17,646 for "inquire". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Remembering inquire vs insure

The fastest way to pick the right one every time.

  • Read both glosses above and match the meaning you intend, only context separates this pair.
  • See each word in full, definition, IPA, etymology and its other confusables. Full “inquire” entry
  • Browse more pairs most likely to be confused. Most confusable

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list