ascensive as·cen·sive UK/əˈsɛnsɪv/ uncommon adjective 1. tending or directed upward “rooted and ascendant strength like that of foliage” John Ruskin Synonymsascendantascendent Similarascending WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). WordNet 2.1 Copyright Princeton University. All rights reserved.