scrupulous

adj.

[1]	careful , cautious , meticulous , exacting , precise , over-nice , strict , rigid , rigorous , severe , critical , fastidious , neat , conscientious , finicky/finical , fussy , painstaking , punctilious
[2]	ethical , conscientious , painstaking , honourable , upstanding , moral , righteous , principled , high-minded , just