Meh

Meh is an interjection used as an expression of indifference or boredom. It may also mean "be it as it may". It is often regarded as a verbal shrug of the shoulders. The use of the term "meh" shows that the speaker is apathetic, uninterested, or indifferent to the question or subject at hand. It is occasionally used as an adjective, meaning something is mediocre or unremarkable.

https://en.wikipedia.org/wiki/Meh