2 adjectives to describe observants

"These kind of knaves I know, which in this plainness, Harbour more craft, and more corrupter ends, Than twenty silly ducking observants.

Behind one we catch sight of the cautiously official mind, obsequious to established power, observant of accepted fictions, contemptuous of zeal, apprehensive of trouble, solicitous for the path of least resistance.

2 adjectives to describe  observants