derpvsdevWhat's the difference?

Quick tell: derp is a intj, dev is a noun, so they fill different roles in a sentence.

Which to use

“derp” is an intj and “dev” is a noun - they look or sound alike but fill different roles in a sentence.

#48,699
“derp” frequency rank
#10,193
“dev” frequency rank
58892
confusion score

Side-by-Side Comparison

Feature derp dev
Definition Draws attention to an act of foolishness or stupidity. Clipping of developer.

Where the eye mixes derp and dev

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

4 ch
derp
3 ch
dev

Visual trap between derp and dev

These two trip readers on the page rather than in the ear: derp is /dɝp/ while dev is /dɛv/. 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 (intj vs noun), which is usually the fastest check. Our composite confusion score for this pair is 58892, derived from the frequency rank of both members and their visual similarity.

derp is recorded at frequency rank #48,699, classified as anintj, pronounced /dɝp/. dev is at rank #10,193, tagged as anoun, pronounced /dɛv/.

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 58892, this pair ranks #109,594 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of derp vs dev

Shared letters: de. Private to "derp": pr. Private to "dev": v.

"derp" · 4 letters · shape CVCC  ·  "dev" · 3 letters · shape CVC

Known mistypes of this pair

  • derpdderp · depr · derpp · derrp · drep · edrp

Frequently Asked Questions

Is swapping "derp" for "dev" ever safe?
No - they are not even the same part of speech. "derp" is an intj and "dev" a noun, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "derp" or "dev"?
"dev" is the more common of the two: it sits at frequency rank #10,193 in our English list, against #48,699 for "derp". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Eye-level mix-up between "derp" and "dev" is sorted above. Next: full entries or other pairs that share a letter shape.

  • Full dictionary entry for "derp" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "dev" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #109,594 of 530,003 scored English confusable pairs in this corpus vintage. Corpus statistics
  • "derp" and "dev" also get mixed up with nearby pairs, the highest-scored neighbour is "derp vs DNP". 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 #109,594 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