UPRIGHT (adj.)
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As an adverb, Old English uprihte. As a noun, 1560s in the sense a vertical front;” c. 1700 as “a vertical timber in framing;” 1742 in the sense “something standing erect.” Meaning “an upright piano” is from 1860.
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Sense of “wholeness, perfect condition” is mid-15c.; that of “soundness of moral principle and character; entire uprightness or fidelity, especially in regard to truth and fair dealing” is by 1540s.