IPA: /ˈɛkstrə/
KK: /ˈɛkstrə/
More than what is usual or necessary; additional or extra in amount or degree.
I ordered an extra slice of pizza because I was still hungry.
To a greater degree than what is usual or expected; more than normal.
She added extra cheese to her pizza for more flavor.
A person who is hired to appear in a film or play, usually in a small role or as part of a crowd.
The movie had many extras to fill the background scenes.
Extra → It is formed from "extra" (from Latin, meaning outside or beyond). The word "extra" refers to something that is outside the usual or beyond what is necessary.
Think of something that is 'beyond' or 'outside' the usual limits — that's what 'extra' means.