# aha vs AR

> English confusable word pair

## The two words

### aha
*intj · IPA /ɑːhɑː/ · frequency rank #13,653*
An exclamation of understanding, realization, invention, or recognition.

### AR
*adjective · frequency rank #6,436*
Initialism of autoregressive.

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