c. 1600, "part or character one takes," from French rôle "part played by a person in life," literally "roll" (of paper) on which an actor's part is written, from Old French rolle (see roll (n.)). Not originally in English with direct reference to actors and the stage, but figurative of them. The meaning "any conspicuous function performed characteristically by someone" is by 1875. In the social psychology sense is from 1913. Role model, one taken by others as a model in performance of some role, is attested by 1957.
c. 1400, "tending to press out," from French expressif, from expres "clear, plain," from stem of Latin exprimere "to press out," also "to represent, describe" (see express (v.)). Meaning "full of expression" is from 1680s. Related: Expressively; expressiveness.
"expressive of strong feeling, filled with passion," c. 1600, past-participle adjective from impassion.
also re-cast, c. 1600, "to throw again," from re- "back, again" + cast (v.). Sense of "to cast or form anew, remodel," especially of literary works and other writing, is from 1790. Meaning "compute anew" is by 1865. Theater sense of "assign an actor or role to another role or actor" is by 1951. Related: Recasting. As a noun, "a fresh molding, arrangement, or modification," by 1840.
by 1979, initialism (acronym) from role-playing game (see roleplay). As an initialism for rocket-propelled grenade, by 1970.
1590s, "pertaining to love, expressive of love" (especially sexual love), from Latin amatorius "loving, amorous," from amat-, past-participle stem of amare "to love" (see Amy). Related: Amatorial.