The story
- Latin · derived fromterminābilis
- Anglo-Norman and Middle French · derived fromterminable
- Middle English · inherited fromterminable“resolvable”
- English todayterminable
From Middle English terminable (“resolvable”), from Anglo-Norman and Middle French terminable and their etymon Latin terminābilis. By surface analysis, termine + -able.
Etymology from Wiktionary, CC BY-SA 4.0.