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 catch a glimpse of

lit. to see one spot on a leopard; fig. a restricted view

lit. see one spot on a leopard (idiom); fig. a restricted view