pervspertWhat's the difference?

Quick tell: per is a preposition, pert is an adjective, so they fill different roles in a sentence.

Which to use

“per” is a preposition and “pert” is an adjective - they look or sound alike but fill different roles in a sentence.

#339
“per” frequency rank
#47,823
“pert” frequency rank
48162
confusion score

Side-by-Side Comparison

Feature per pert
Definition For each. Attractive.

Where the eye mixes per and pert

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

3 ch
per
4 ch
pert

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: per is /pɜː/ while pert is /pɜːt/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 extra letter(s) - “per” sits inside “pert”, and the parts of speech differ too (preposition vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 48162, derived from the frequency rank of both members and their visual similarity.

per is recorded at frequency rank #339, classified as aprep, pronounced /pɜː/. pert is at rank #47,823, tagged as anadj, pronounced /pɜːt/.

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 48162, this pair ranks #195,667 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of per vs pert

Shared letters: epr. Private to "per": -. Private to "pert": t.

"per" · 3 letters · shape CVC  ·  "pert" · 4 letters · shape CVCC

Known mistypes of this pair

  • perteprt · perrt · pertt · ppert · pret

Frequently Asked Questions

Can "per" and "pert" be used interchangeably?
No - they are not even the same part of speech. "per" is a preposition and "pert" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "per" or "pert"?
"per" is the more common of the two: it sits at frequency rank #339 in our English list, against #47,823 for "pert". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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

Source: FrequencyWords open word-frequency list