Meaning

noun the unlimited expanse in which everything is located

adjective having no limits or boundaries in time or space or extent or magnitude

adjective of verbs; having neither person nor number nor mood (as a participle or gerund or infinitive)

originFrom Middle English infinite, from Old French infinit and its etymon Latin īnfīnītus, from in- (“not”) + fīnis (“end”) + the perfect passive participle ending -ītus. By surface analysis, in- + finite. Doublet of infinito. Displaced native Old English unġeendodlīċ.

Etymology from Wiktionary, CC BY-SA 3.0