Answer: whiffle

AnswerCrossword Clue
WHIFFLEBlow fitfully.
WHIFFLEVacillate
whiffleto blow in light or shifting gusts or puffs, as the wind; veer or toss about irregularly
whiffleto shift about; vacillate; be fickle
whiffleto blow with light, shifting gusts
whiffleto blow in puffs