posture (n.) Look up posture at Dictionary.com
c.1600, from French posture (16c.), from Italian postura "position, posture," from Latin positura "position, station," from postulus, past participle of ponere "put, place" (see position (n.)).
posture (v.) Look up posture at Dictionary.com
1620s, literal, from posture (n.). The figurative sense of "take up an artificial mental position" is attested from 1877. Related: Postured; posturing.