puissant
puis·sant
adjective
Origin
From Middle English puissaunt, from Middle French puissant, poissant, Anglo-Norman puissant, Old French pussant, et al., present participle of pooir (“to be able”), ultimately from Latin posse (“be able”).
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.