
English word explain comes from Latin plano, Latin evanescere
plano (Latin)
evanescere (Latin)
explano (Latin)
explaner (Old French)
explanen (Middle English)
explain (English)
(obsolete) To make flat, smooth out.. (obsolete) To unfold or make visible.. To give a valid excuse for some past behavior.. To make plain, manifest, or intelligible; to clear of obscurity; to illustrate the meaning of.