derp vs dup, What's the Difference?

Which to use

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

#48,699
“derp” frequency rank: #28,177
“dup” frequency rank: 76876
confusion score

Side-by-Side Comparison

Feature	derp	dup
Definition	Draws attention to an act of foolishness or stupidity.	to open (a door, gate etc.)

Where the spellings diverge

Shared letters are muted; the letters that actually set derp and dup apart are highlighted. They share 2 letters in sequence, which is exactly why the eye skips the difference.

4 ch

derp

3 ch

dup

Spelling & Dictionary Insight

These two trip readers on the page rather than in the ear: derp is /dɝp/ while dup is /dʌp/. 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 verb), which is usually the fastest check. Our composite confusion score for this pair is 76876, 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/. dup is at rank #28,177, tagged as averb, pronounced /dʌp/.

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 76876, this pair ranks #28,879 of 530,003 scored English confusable pairs - among the most confusable pairs.

Orthographic DNA of derp vs dup

Shared letters: dp. Private to "derp": er. Private to "dup": u.

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

Known mistypes of this pair

derp ← dderp · depr · derpp · derrp · drep · edrp

Frequency comparison

derp#48,699

dup#28,177

Source: FrequencyWords open word-frequency list

Frequently Asked Questions

Can "derp" and "dup" be used interchangeably?

No - they are not even the same part of speech. "derp" is an intj and "dup" a verb, so a sentence built for one is usually ungrammatical with the other.

Which is more common, "derp" or "dup"?

"dup" is the more common of the two: it sits at frequency rank #28,177 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.

Remembering derp vs dup

The fastest way to pick the right one every time.

Check the role first: if you need an intj, it's “derp”; for a verb, it's “dup”.
See each word in full, definition, IPA, etymology and its other confusables. Full “derp” entry
Browse more pairs most likely to be confused. Most confusable