relieve a half-forgotten grief by venting pent-up feelings, rip up old sores, pay off old scores, give vent to anger by making harsh remarks (against someone)

express rancour, express chagrin or resentment

give vent to one's chagrin or anger

build castles in the air

spoil one's fortune

to act hastily and prematurely (which can be harmful)

(of the eye) to cause to go blind, divulge (a secret), disclose, eat gluttonously, split, shatter

cause pain and trouble, marry off to an unsuitable or disagreeable person

spill the beans, blow the gaff, betray a secret

painful thing

blister on the palm

study hard

disclose a secret, let the cat out of the bag