不阴不阳

Explanation: Analogy undecided and ambiguous. 　　Usage: Joint type; as predicate; describe the attitude of uncertainty 　　Source: Peking Opera, "Sha Jia Bang" IV: "He does not look nor yin yang." 　　Examples: He looked no negative nor positive. ★ Beijing Opera, "Sha Jia Bang" fourth Thesaurus:  hem and haw, grain or chaff, Confuse, ambiguous two ends, Good and bad, regardless of Antonym Group:  cardinal questions of right and wrong, merits and demerits, call [make] white black black and white, right and wrong