Added 9 October 2026 viability /ˌvaɪəˈbɪlɪti/ noun Categories: Describing WordsUncommon Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about viability at Wordnik → Where our words come from → (of living things) capable of normal growth and development. Capable of being done in a practical and useful way. Related Words: vitalityvigourvigordynamismsoliditylivelinessvibrancycapacitysuccesssurvivabilitysurvivalstability Back to today's word