Definition & Meaning of "meh"in English

What does "meh" mean in reaction slang?

The term "meh" is used to express indifference, boredom, or mild disapproval. The structure is an onomatopoeic shrug-like utterance that signals lack of strong feeling. It is informal slang commonly used in casual speech and online communication to indicate something is uninteresting, underwhelming, or not worth a strong reaction.