fit to kill adjective 2adverb 2forms 2 adjective2 •Very well groomed.He was smiling, easy, correct, perfectly delightful, fit to kill. — 1919 •Extremely angry.“I think you should consider lowering yourself,” Sherlock said, and in that moment, Tennyson looked fit to kill. — 2002 adverb2 •Extremely; lavishly.Well, during the strike Clarence Drum comes pee-rading up to our table, all dolled up fit to kill in his nice lil cap'n's uniform, and somebody says to him, 'Busting the strike, Clarence?' — 1922 •In a manner full of anger or malevolence.There are unbelievable sights. People watch, on television, as ordinary citizens speak up to question ministers and Party bigwigs, while in Moscow, big brother is now frowning fit to kill. — 2009 formsmore fit to kill · most fit to kill