1) (of a person) taking pleasure in causing pain to, watching the suffering of, others (cruel)
2) experienced by watching or reading about other people doing it; experienced as a substitute for another person (vicarious)
3) a person watching a television programme (viewer)
a long, steady look
long, fixed stare
(of looks) eager; earnest; (of a person) having, showing, serious and constant desire or attention
determined, resolute
the act, state, of observing or being observed; the power of noticing carefully
attention, scrutiny
to go round (a place) to see that all is well, to look out for people doing wrong, in need of help etc
guarding; guard