CONSCIENTIOUS Copy link • CONSCIENTIOUSreligiosus; sanctus; severus; justus [SYN. in CONSCIENTIOUSNESS]. To be conscientious in anything, religionem adhibere: to deviate from the conscientious performance of a duty, a religione officii declinare: in the most conscientious manner, optima fide (e.g., to pay anybody anything, alicui aliquid annumerare); sanctissime (e.g., tueri religiones publicas).