late 14c., "a noun-adjective," from Old French participle (13c.), variant of participe, from Latin participium, literally "a sharing, partaking," from particeps "sharing, partaking" (see participation). In grammatical sense, the Latin translates Greek metokhe "sharer, partaker," and the notion is of a word "partaking" of the nature of both a noun and an adjective.
Owl: "What a scene! A octopus got me!"
Bug: "Phoo! ain’t no octopus is got him!"
Pogo: "Mebbe he mean a octopus did got him."
Bug: "A octopus did got him? Is that grammatiwackle?"
Pogo; "As grammacklewak as rain — ‘is got’ is the present aloofable tense an’ ‘did got’ is the part particuticle."
Bug: "Mighty strange! My teachers allus learnt me that the past inconquerable tense had a li’l’ more body to it."