[no obj.]alternate or waver between different opinions or actions; be indecisive 动摇,犹豫,踌躇 I had for a time vacillated between teaching and journalism. 我曾在教师和记者两种职业间踌躇过。
派生 vacillation noun vacillator noun 语源
late 16th cent. (in the sense 'sway unsteadily'): from Latin vacillat- 'swayed', from the verb vacillare