hacky adjective5 •(informal) Using, or characterised by, hacks: poorly designed workarounds. •(informal) Hackneyed (lacking significance through having been overused; unoriginal and trite) •Like a hack; amateurish. •(informal) Short and interrupted, broken, jerky; hacking.s hacky cough. A hacky laugh. A hacky breath. •Filthy or totally dirty. formshackier · more hacky · hackiest · most hacky