Unimportant
/ˌʌn.ɪmˈpɔːr.tənt/
Synonyms
- insignificant
- minor
- negligible
- trivial
- inconsequential
Slang Meanings
Ain't no biggie
Losing the game was just an unimportant match; it ain't no biggie.
No big deal
She forgot my birthday; it's really no big deal to me.