make a counterattack and return like for like, especially evil for evil; "The Empire strikes back"; "The Giants struck back and won the opener"; "The Israeli army retaliated for the Hamas bombing"
an anxiety disorder characterized by extreme and irrational fear of simple things or social situations; "phobic disorder is a general term for all phobias"
bear (a cost or penalty), in recompense for some action; "You'll pay for this!"; "She had to pay the penalty for speaking out rashly"; "You'll pay for this opinion later"
give money, usually in exchange for goods or services; "I paid four dollars for this sandwich"; "Pay the waitress, please"
discharge or settle; "pay a debt"; "pay an obligation"
do or give something to somebody in return; "Does she pay you for the work you are doing?"
make a compensation for; "a favor that cannot be paid back"