こんな時英語でどう言うの〜？英会話辞典 ：　

「む」

無意識に　：　Unconsciously.  
向かう　：　Face.   Turn toward.   
昔のことです　：　Those are the days.  
むかつく　：　Make one sick.   Make one angry.   
ムキにならないで　：　Chill out.   Take it easy.   
ムキになる　：　Get uptight.   Lose one's head.   
〜向きの　：　Made for ...   
向こう見ずな　：　Reckless.   Stupid.   Short-sighted.   
むさ苦しい　：　Messy.   
蒸し暑い　：　Muggy.  
虫が好かない　：　Not one's type.   
虫が好かない奴　：　Obnoxious (man or woman).  
無視する　：　Ignore.   
虫のいい　：　Expect too much.   Take too much for granted.   
虫の居所が悪い　：　Be in a bad mood.   Be bugged by someone/something.   
無性に〜したい　：　Have a wild urge to ...   Have a crazy desire to ...   
無性に腹が立つ　：　Get really angry.   Get totally pissed off.     
難しい　：　Difficult.   Complicated.   Tricky.   
結ぶ　：　Tie up (a package, a speech).  Form (a contract).  Get hitched.  
むずむず　：　One's spine tingles.  (〜したくてむずむずする)Be dying to ...　
無駄口をたたく　：　Chat.  Yakkety-yak.   
無駄だね〜　：　It's useless !  
無駄づかい　：　Waste money.   
無駄骨　：　A waste of time.    
無駄骨を折る　：　Waste one's time (effort). Do all that work for nothing.　
無茶言わないで　：　Don't be unreasonable.   
むちゃくちゃ　：　Nutty.  (What he says is nutty.)  
              :   A bat out of hell.  (He drove like a bat out of hell.)    
              :   Extremely. (It's extremely crowded.)        
夢中になる　：　Be beside oneself (with joy). Be wild about. Be deep into...  
胸騒ぎがする　：　Have a bad feeling about.  Feel uneasy about.   
胸がいっぱいになる　：　One's heart is full of (joy, sorrow).   
胸に一物ある　：　Have a hidden motive.   
胸を打つ　：　Be deeply impressed (by, with).  
胸を貸す　：　Give someone a workout.   
胸をなで下ろす　：　Have a sigh of relief.   
無用　：　Useless.   Unnecessary.  Don't ...   
ムラがある　：　Up and down.   Uneven.  
無理しないで下さい　：　Don't overdo it.   
無理だよ　：　That's impossible !   
無理にとは言いませんが　：　I hate to ask you, but ....  
無理もない　：　It's only natural.   It's no wonder.   
無理もないよ〜　：　I don't blame you.   
無料で　：　Free.         

　

このコーナーは「講談社文庫」の「こんな時どう言う英会話辞典」（長村キット著）
から抜粋させて頂きました。
この本には役に立つフレーズが満載です。読み物としても面白いですよ〜！