pep vs per, What's the Difference?

Which to use

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

#14,612
“pep” frequency rank: #339
“per” frequency rank: 14951
confusion score

Side-by-Side Comparison

Feature	pep	per
Definition	To inject with energy and enthusiasm.	For each.

Where the eye mixes pep and per

Muted = shared; highlighted = the visual trap. They share 2 letters in sequence.

3 ch

pep

3 ch

per

Visual trap between pep and per

These two trip readers on the page rather than in the ear: pep is /pɛp/ while per is /pɜː/. Spoken aloud the problem disappears. In writing it persists, because they differ by a single letter - p in “pep” becomes r in “per”, and the parts of speech differ too (verb vs preposition), which is usually the fastest check. Our composite confusion score for this pair is 14951, derived from the frequency rank of both members and their visual similarity.

pep is recorded at frequency rank #14,612, classified as averb, pronounced /pɛp/. per is at rank #339, tagged as aprep, pronounced /pɜː/.

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 14951, this pair ranks #466,954 of 530,003 scored English confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of pep vs per

Shared letters: ep. Private to "pep": -. Private to "per": r.

"pep" · 3 letters · shape CVC · "per" · 3 letters · shape CVC

Frequently Asked Questions

Can "pep" and "per" be used interchangeably?

No - they are not even the same part of speech. "pep" is a verb and "per" a preposition, so a sentence built for one is usually ungrammatical with the other.

Frequency check: "pep" vs "per" - which ranks higher?

"per" is the more common of the two: it sits at frequency rank #339 in our English list, against #14,612 for "pep". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

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 "pep" with definition, IPA, and generated misspellings. Word entry
Full dictionary entry for "per" - compare definitions side by side with the headword page. Word entry
This pair ranks #466,954 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
"pep" and "per" also get mixed up with nearby pairs, the highest-scored neighbour is "pep vs PPA". Nearby pair

Confusion rank #466,954 of 530,003 scored English pairs, corpus vintage 2026-09-03, not spelling advice.