progvsproveWhat's the difference?

Quick tell: prog is a adjective, prove is a verb, so they fill different roles in a sentence.

Which to use

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

#23,952
“prog” frequency rank
#1,771
“prove” frequency rank
25723
confusion score

Side-by-Side Comparison

Feature prog prove
Definition Abbreviation of progressive. To demonstrate that something is true or viable; to give proof for; to bear out; to testify.

Where the eye mixes prog and prove

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

4 ch
prog
5 ch
prove

Visual trap between prog and prove

These two trip readers on the page rather than in the ear: prog is /pɹɒɡ/ while prove is /pɹuːv/. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (adjective vs verb), which is usually the fastest check. Our composite confusion score for this pair is 25723, derived from the frequency rank of both members and their visual similarity.

prog is recorded at frequency rank #23,952, classified as anadj, pronounced /pɹɒɡ/. prove is at rank #1,771, tagged as averb, pronounced /pɹuːv/.

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 25723, this pair ranks #392,144 of 530,003 scored English confusable pairs - roughly mid-pack for confusability.

Orthographic DNA of prog vs prove

Shared letters: opr. Private to "prog": g. Private to "prove": ev.

"prog" · 4 letters · shape CCVC  ·  "prove" · 5 letters · shape CCVCV

Known mistypes of this pair

  • progporg · pprog · prgo · progg · prrog · rpog
  • proveporve · pprove · proev · provve · prrove · prvoe · rpove

Frequently Asked Questions

Is swapping "prog" for "prove" ever safe?
No - they are not even the same part of speech. "prog" is an adjective and "prove" a verb, so a sentence built for one is usually ungrammatical with the other.
In ordinary English text, does "prog" or "prove" show up more?
"prove" is the more common of the two: it sits at frequency rank #1,771 in our English list, against #23,952 for "prog". That is a wide gap, so in ordinary text the rarer spelling is the one worth double-checking.

What to do next

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "prog" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "prove" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #392,144 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "prog" and "prove" also get mixed up with nearby pairs, the highest-scored neighbour is "poon vs prog". 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 #392,144 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