'Judeophobic' originates from Modern English, specifically formed from the combining form 'Judeo-' and the suffix '-phobic', where 'Judeo-' meant 'Jew' (from Greek 'Ioudaios' via Latin 'Iudaeus') and '-phobic' derived from Greek 'phobos' meaning 'fear'.

'Judeo-' traces back to Greek 'Ioudaios' and Latin 'Iudaeus', which entered English as the combining form 'Judeo-'; '-phobic' comes from Greek 'phobos' via New Latin/modern formations '-phobia' and '-phobic', and these elements combined in Modern English to form 'Judeophobia' and the adjective 'Judeophobic'.

Initially it denoted a literal 'fear of Jews', but over time it has broadened to mean 'hostility, prejudice, or hatred toward Jews' and anything describing such attitudes.