rectitude UK /ˈɹɛk.tɪ.tjuːd/US /ˈɹɛk.tə.tuːd/ noun3 •Conformity to the rules prescribed for moral conduct; (moral) uprightness, virtue.“Sit with her all night if we have to,” Syd affirms with strenuous rectitude. — 1986 •Straightness; the state or quality of having a constant direction and not being crooked or bent. •(no longer used) The fact or quality of being right or correct; correctness of opinion or judgement. formsrectitudes