See agonize in Webster's New World Roget's A-Z Thesaurus II
verb
To twist and turn, as in pain, struggle, or embarrassment:
squirm, toss, turn, writhe. See repetitionTo bring great harm or suffering to:
afflict, anguish, curse, excruciate, plague, rack, scourge, smite, strike, torment, torture. See attack, help
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