late 15c., "to lament," probably from Middle Dutch jammeren and cognate Middle English yeoumeren, "to mourn, complain," from Old English geomrian "to lament," from geomor "sorrowful," probably of imitative origin. Meaning "to make loud, annoying noise" is attested from 1510s. Related: Yammered; yammering.
: despite what you may have heard from Ralph Nader or some radio yak-show host
A radio talk show (1980s+)