# insufficient vs insufficiently

> English confusable word pair

## The two words

### insufficient
*determiner · IPA /ɪnsəˈfɪʃənt/ · frequency rank #10,067*
An inadequate quantity of; not enough.

### insufficiently
*adverb · frequency rank #38,910*
Not sufficiently.

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