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up‧right1

1 standing or sitting straight up
Katie was still awake, sitting bolt upright (=sitting with her back very straight) staring at the television.
Katie was still awake, sitting bolt upright (=sitting with her back very straight) staring at the television.2 placed in a vertical position (=pointing in a line that is at an angle of 90° to a flat surface) :
Keep the bottle upright.
Keep the bottle upright.3 always behaving in an honest way :
He was a good honest upright man.
He was a good honest upright man. —uprightness noun [uncountable]
WORD FOCUS: good 
very good: excellent, fantastic, wonderful, great, terrific, neat American English, superb, amazing, outstanding, brilliant, impressive, fine, first-class, out of this world
of good quality: high quality, top quality, superior, deluxe, classy
morally good: decent, virtuous, respectable, honourable British English/honorable American English, upright, beyond reproach
➔ See also good
