harkEnglishOxford American Thesaurushark verb literary hark, I hear a warning note: listen, lend an ear, pay attention, pay heed, attend, mark, note, notice; archaic hearken, give ear.□ hark backthese newest styles hark back to the seventies: recall, call to mind, look back to, turn back to, cause one to remember, cause one to recollect, cause one to think back to.