Middle English word pleynly comes from Middle English pleyn (Clear; unambiguous.), Middle English -ly (-ly (suffix used to form adverbs).)

Detailed word origin of pleynly

Dictionary entry	Language	Definition
pleyn	Middle English (enm)	Clear; unambiguous.
-ly	Middle English (enm)	-ly (suffix used to form adverbs).
pleynly	Middle English (enm)	Plainly; clearly; unambiguously.

Words with the same origin as pleynly