propugnator
/ˈprəʊpʌɡneɪtə/Now rare
noun
= propugner.
Origin
Late Middle English; earliest use found in Mirour of Mans Saluacioune. From classical Latin prōpugnātor defender, protector, champion from prōpugnāt-, past participial stem of prōpugnāre + -or. Compare Middle French, French †propugnateur.