'apotheosize' originates from Modern English, specifically the noun 'apotheosis' combined with the productive English suffix '-ize', where 'apotheosis' ultimately comes from Greek 'apothéōsis' (ἀποθέωσις), in which the prefix 'apo-' meant 'away/from' and 'theos' meant 'god'.

'apotheosize' was formed in English by adding the verb-forming suffix '-ize' to the noun 'apotheosis'. The noun 'apotheosis' entered English via Latin 'apotheosis' from Greek 'apothéōsis' (ἀποθέωσις, 'a making a god' or 'deification').

Initially it had the literal sense 'to make a god of' (to deify); over time the meaning broadened to include a figurative sense 'to exalt or idealize (someone or something)'.