whiffle (verb) falter: stumble, stutter
Sinonime: be undecided, bobble,
break, drop the ball, flounder,
fluctuate, fluff,
halt, hem and haw,
hesitate, lurch, quaver, reel,
rock,
roll, scruple,
shake, speak haltingly,
stagger, stammer, stub toe, teeter, topple, totter,
tremble, trip up,
vacillate,
waver, whiffle,
wobbleAntonime: continue,
endure,
maintain,
persist,
remain,
stay