'morally-upright' originates from the combination of 'moral' and 'upright', where 'moral' is derived from Latin 'moralis', meaning 'pertaining to manners', and 'upright' from Old English 'upright', meaning 'erect, honest'.

'moralis' transformed into the English word 'moral', and 'upright' remained largely unchanged from Old English to modern English.

Initially, 'moral' meant 'pertaining to manners', but over time it evolved to mean 'conforming to standards of right behavior'.