A sound some one makes, caused from being dissapointed, mad, overwhelmed, upset, confused, or when disagreeing or showing general disregard for something.
You: "Sorry, I can't come over tonight"
Your friend: "Merhhhh"
Can be used as a noun, verb, adjective, adverb, onomatopoeia, and can literally replace any word in the English language. Used to describe feelings of indifference, extreme happiness, sadness, confusion, surprise, anger, or frustration. Acceptable in any situation imaginable.
meaning "ugh" or "meh". often used as a sign of frustration or a statement similar to "i'm a faggot". Can be used as a verb, noun, adjective, onomatopoeia, and backscratcher.