bone contention (noun) bone of contention: difference of opinion
Sinonime: audaciousness, audacity, boldness, cheek, cheekiness, chutzpa, chutzpah, discourtesy, disrespect, effrontery, forwardness, gall, hutzpa, hutzpah, impertinence, impudency, insolence, nerve, nerviness, overconfidence, presumptuousness, pushiness, rudeness, sassiness, sauciness, shamelessness