vacillo

vacillō āvī, ātus, āre,

to sway to and fro, stagger, reel, totter: ex vino: in utramque partem toto corpore: epistula vacillantibus litterulis.—Fig., to waver, hesitate, be untrustworthy, vacillate: tota res vacillat et claudicat: cum unā legione et eā vacillante, i. e. untrustworthy: in vetere aere alieno vacillant, stagger under a load of old debts.