# dup vs duper

> English confusable word pair

## The two words

### dup
*verb · IPA /dʌp/ · frequency rank #28,177*
to open (a door, gate etc.)

### duper
*noun · IPA /ˈduː.pə(ɹ)/ · frequency rank #33,629*
a person who dupes another

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/vs/dup-vs-duper