paroxysm[noun]Synonyms: outburst, attack, convulsion, fit, seizure, spasm 
 [TahlilGaran] English Synonym Dictionary ▲
 par‧ox‧ys‧m /ˈpærəksɪz
əm/ 
 noun [countable][
Date: 1500-1600; 
Language: French; 
Origin: paroxysme, from Greek paroxysmos, from paroxynein 'to encourage into action', from oxys 'sharp']
1.  a sudden expression of strong feeling that you cannot control
paroxysm of Had she cut her wrists in a paroxysm of guilt?2.
 Had she cut her wrists in a paroxysm of guilt?2.  a sudden, short attack of pain, coughing, shaking etc 
 [TahlilGaran] Dictionary of Contemporary English ▲