1590s, "to sway unsteadily," from Latin vacillatus, past participle of vacillare "sway to and fro; hesitate" (see vacillation). Meaning "to waver between two opinions or courses" is recorded from 1620s. Related: Vacillated; vacillates; vacillating.
雙語例句
1. Such parents vacillate between saying no and giving in — but neither response seems satisfactory to them.
這類家長舉棋不定,對孩子們的無理要求,不知道是該回絕還是該滿足,覺得這兩者都不理想.
來自《簡明英漢詞典》
2. Without doubt , the national bourgeoisie tends to vacillate , but we should , nevertheless, make use of its positive side, uniting with it as well as struggling against it.