handwaver noun3 •Someone who engages in handwaving. •One who speaks or writes sweepingly, glossing over details, often including important details.Take his predictions about our technological and business-development timelines with a grain of salt, because he's an inveterate handwaver. •One who raises their hand a lot.A gifted pupil might sometimes need to be coached privately about avoiding presenting themself as a handwaver. formshandwavers