IPA: /ɪnˈfleɪt/
KK: /ɪnˈfleɪt/
To become larger or fuller by filling with air or gas.
The balloon will inflate when you blow air into it.
Past: inflated
Past Participle: inflated
To fill something with air or gas to make it larger or to increase its size.
He decided to inflate the balloon before the party.
Past: inflated
Past Participle: inflated
Inflate is formed from "in-" (meaning into) and "flare" (from Latin "flare", meaning to blow or to breathe). The word describes the action of blowing air into something, causing it to expand or swell.
Think of blowing air 'into' something ('in-') to make it bigger, which is what inflate means.