to pry into or spy on; to snoop; to peep; to poke one's nose into; to peer; to get a glimpse of

to peep at; to spy on; to peek

to spy upon; to lie in wait for (an opportunity)

to peep; to spy on

to find out about; to discover

to peep; to peek; to act as voyeur

to look at sth through a bamboo tube; to have a restricted view

to peep at