1. unh; oofexpression of physical exertion
2. wow; whoa
3. yes; yeah; uh-huhSee also うん
Wikipedia definition
4. Mu (kana)む, in hiragana, or ム in katakana, is one of the Japanese kana, which each represent one mora. Both hiragana and katakana are made with three strokes, they represent [mu͍ mu͍]. The kanji 無, read "mu", represents "none", nothingness, or the state of oblivion upon death, if written alone. In the Ainu language, ム can be written as small ㇺ, which represents a final m sound.
Read “Mu (kana)” on English Wikipedia
Read “む” on Japanese Wikipedia
Read “Mu (kana)” on DBpedia


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