ambiguity (n.)youdaoicibaDictYouDict[ambiguity 词源字典]
c. 1400, "uncertainty, doubt, indecision, hesitation," also from Medieval Latin ambiguitatem (nominative ambiguitas) "double meaning, equivocalness, double sense," noun of state from ambiguus (see ambiguous).[ambiguity etymology, ambiguity origin, 英语词源]