imposevsimpureConfusable pair

Quick tell: impose is a verb, impure is an adjective, so they fill different roles in a sentence.

Which to use

“impose” is a verb and “impure” is an adjective - they look or sound alike but fill different roles in a sentence.

#8,047
“impose” frequency rank
#30,840
“impure” frequency rank
38887
confusion score

Side-by-Side Comparison

Feature impose impure
Definition To physically lay or place (something) on another thing; to deposit, to put, to set. Not pure

Where the eye mixes impose and impure

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence.

6 ch
impose
6 ch
impure

Why the eye confuses impose with impure

These two trip readers on the page rather than in the ear: impose is /ɪmˈpəʊz/ while impure is /ɪmˈpjʊə(ɹ)/. 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 (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 38887, derived from the frequency rank of both members and their visual similarity.

impose is recorded at frequency rank #8,047, classified as averb, pronounced /ɪmˈpəʊz/. impure is at rank #30,840, tagged as anadj, pronounced /ɪmˈpjʊə(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 38887, this pair ranks #281,804 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of impose vs impure

Shared letters: eimp. Private to "impose": os. Private to "impure": ru.

"impose" · 6 letters · shape VCCVCV  ·  "impure" · 6 letters · shape VCCVCV

Known mistypes of this pair

  • imposeimmpose · imopse · impoes · imposse · imppose · impsoe · ipmose · mipose
  • impureimmpure · imppure · imprue · impuer · impurre · imupre · ipmure · mipure

Frequently Asked Questions

Can "impose" and "impure" be used interchangeably?
No - they are not even the same part of speech. "impose" is a verb and "impure" an adjective, so a sentence built for one is usually ungrammatical with the other.
Frequency check: "impose" vs "impure" - which ranks higher?
"impose" is the more common of the two: it sits at frequency rank #8,047 in our English list, against #30,840 for "impure". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Visual near-miss handled. Browse the word pages or a neighbour when the next look-alike shows up.

  • Full dictionary entry for "impose" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "impure" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #281,804 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "impose" and "impure" also get mixed up with nearby pairs, the highest-scored neighbour is "implore vs impure". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #281,804 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.

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

Source: FrequencyWords open word-frequency list