waver (v.) Look up waver at Dictionary.com
c.1280, weyveren, "to show indecision," probably related to O.E. węfre "restless, wavering," from P.Gmc. *wębraz (cf. M.H.G. wabern "to waver," O.N. vafra "to hover about"), a frequentative form from the root of wave (v.).