Added 9 October 2026 imperfective /ˌɪmpɚˈfɛktɪv/ noun Categories: Describing WordsRare Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about imperfective at Wordnik → Where our words come from → Aspect without regard to the beginning or completion of the action of the verb. Related Words: perfectiveatelicaoristaoristicaspectualdurativeinchoativeimperativalaspectivetelic Back to today's word