| 释义 | vacillatevacillate /ˈvæsəˌleɪt/ verb [intransitive] ETYMOLOGYvacillateOrigin: 1500-1600 Latin, past participle of  vacillare  to move from side to side, fail to decide to continue to change your opinions, ideas, behavior, etc. SYN waver: vacillate between She vacillated between anger and self-pity.—vacillation /ˌvæsəˈleɪʃən/ noun [countable, uncountable]VERB TABLEvacillate |
 | Present | I, you, we, they | vacillate |  |  | he, she, it | vacillates |  | Past | I, you, he, she, it, we, they | vacillated |  | Present perfect | I, you, we, they | have vacillated |  |  | he, she, it | has vacillated |  | Past perfect | I, you, he, she, it, we, they | had vacillated |  | Future | I, you, he, she, it, we, they | will vacillate |  | Future perfect | I, you, he, she, it, we, they | will have vacillated | 
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 | Present | I | am vacillating |  |  | he, she, it | is vacillating |  |  | you, we, they | are vacillating |  | Past | I, he, she, it | was vacillating |  |  | you, we, they | were vacillating |  | Present perfect | I, you, we, they | have been vacillating |  |  | he, she, it | has been vacillating |  | Past perfect | I, you, he, she, it, we, they | had been vacillating |  | Future | I, you, he, she, it, we, they | will be vacillating |  | Future perfect | I, you, he, she, it, we, they | will have been vacillating | 
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