# diagnostic vs diagnostics

> English confusable word pair

## The two words

### diagnostic
*adjective · IPA /daɪ.əɡˈnɒs.tɪk/ · frequency rank #9,165*
Of, or relating to diagnosis.

### diagnostics
*noun · frequency rank #22,057*
plural of diagnostic

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