Added 9 October 2026 life-sustaining adjective Categories: Describing WordsObscure Words adjective ! Definition from WordNet 3.1, Princeton University. More about life-sustaining at Wordnik → Where our words come from → Performing an essential function in the living body. vital organs Related Words: essentialvitallife-supportsubsistencesurvivalsurvivorshipsustenancesustentationnourishment Back to today's word