n. 25B6; noun
the lions killed their prey : QUARRY, kill.
she was easy prey : VICTIM, target, dupe, gull; informal sucker, soft touch, pushover; N. Amer. informal patsy, sap, schlemiel; Austral./NZ informal dill.
predator.
25A0; prey on
hoverfly larvae prey on aphids : HUNT, catch; eat, feed on, live on/off.
they prey on the elderly : EXPLOIT, victimize, pick on, take advantage of; trick, swindle, cheat, hoodwink, fleece; informal con.
the problem preyed on his mind : OPPRESS, weigh (heavily) on, lie heavy on, gnaw at; trouble, worry, beset, disturb, distress, haunt, nag, torment, plague, obsess.