noun

1. A judgement marked by indifference; lack of impression.

adjective

1. Mediocre; lackluster; unexceptional; uninspiring.

2. Apathetic; unenthusiastic.

interjection

1. Expressing indifference or lack of enthusiasm.

   ““That film was awesome!” — “Meh. I’ve seen better.””

Synonyms: bah, feh, phht, pht, pish, poh, pooh, pshaw