: having a high-pitched, shrill or plaintive quality
a whiny voice
"So What'cha Want," despite its jittery organ, whiny guitar, and distorted vocals, turned out to be one of the least predictable-sounding hit singles of recent years. Alan Light
b
: characterized by or given to complaining
whiny children
Their whiny, even beggarly tone was hardly the supremely confident sound of the American Century. Sidney Blumenthal
… offering little more than a whiny list of grievances … Linda Chavez
In this conversational memoir, Nancy comes across as honest, if a little whiny, and a major-league worrier. Ilene Cooper
whininessnoun
A few years ago, thirtysomething was widely reviled for encouraging the yuppie ethos of materialism and whininess. Mark Harris
… I heard something, a certain whininess in his voice, maybe, that led me to conclude that I wasn't about to get a pasting … Nick Hornby