There are two.
1. The word equivalent to a shrug
2. The word you use when you are in a bad mood and you want to be alone.

meh - v. the verbal equivalent of shrugging ones shoulders. indifference. a non-committal answer to any question.

Pretending you don't care when really you do.

1:An expression of indecision.
2:Indifference,slightly less severe than feh.
3:The way I say "Hi" or "What"
4:"I don't know."

to shrug shoulders or not care. or being indiffrent, not caring, you get the point.

meh=meh.

(adj)(n)(v)
Used in response to questions when one simply cannot be bothered to, or simply cannot find the right words to answer. The word has numerous meanings and intents, thus meaning one must apreciate the TONE in which the word is spoken aswell as CONTEXT in order to correctly interpret the response.

Most often accompanied by a humble chin stroke and shoulder shrug. With careful use the word has the power to make one seem smart, however over use can have a reverse effect.

The true answer to the universe.

1. equivilant to shrugging your shoulder, and saying i dont know, or not really . you could even shrug your shoulders will saying it if you want.

2. when imitating someone add mehh in there for an extra dramatic effect.