meh

meh · adjective, interjection, noun¹

Popularized by the American television show The Simpsons; first used on the show in the episode titled "Sideshow Bob Roberts" (1994). Possibly ultimately from Yiddish מע (me, “so-so”). First attested in 1928, with usage as an interjection dated to 1992.

meh · particle²

1. Cantonese · borrowed from咩
2. English todaymeh

From Cantonese 咩 (me¹, final particle used to make doubtful yes–no questions).

meh · interjection³

Onomatopoeic.