adj. & n.
--adj.
1. erect, vertical (an upright posture; stood upright).
2 (of a piano) with vertical strings.
3 (of a person or behaviour) righteous; strictly honourable or honest.
4 (of a picture, book, etc.) greater in height than breadth.
--n.
1. a post or rod fixed upright esp. as a structural support.
2 an upright piano.
Derivatives:
uprightly adv. uprightness n.
Etymology: OE upriht (as UP, RIGHT)