在线词典不三不四指不正派,也指不象样子。拼音bù sān bù sì解释指不正派,也指不象样子。近义词不伦不类、非僧非俗反义词一本正经、正襟危坐、堂堂正正英文释义(idiom) dubious; shady; neither one thing nor the other; neither fish nor fowl; nondescript