expressionable,a.|ɛkˈsprɛʃənəb(ə)l| [f. expression + -able.] Capable of showing expression. 1892Blackw. Mag. CLI. 43/2 Mozart..discovered the soul-reaching and expressionable capacity of instrumental music.1908Daily Chron. 15 Jan. 8/4 The mouth is an orator's mouth; clear cut, expressionable.