vacillate /ˈvæsəˌleɪt/ verb vacillates; vacillated; vacillating
vacillates; vacillated; vacillating
Learner's definition of VACILLATE
[no object] formal
: to repeatedly change your opinions or desires踌躇;犹豫 —
often + between — vacillation
/ˌvæsəˈleɪʃən/ noun, plural vacillations [count, noncount]