Judas /ˈd͡ʒuːdəs/exclamation 1noun 2forms 2 exclamation1 •(no longer used) Jesus! (an exclamation used to express shock or surprise at something negative) noun2 •A traitor; a person not to be trusted. •Ellipsis of Judas-hole (“small hole for spying”).The door was slammed in his face, and the Judas clicked shut, leaving him alone in the draughty street, now smelling of night and approaching snow. — 1982 formsJudases · judases