REPRISAL(Noun): an act of retaliation (प्रतिहिंसा)
Meticulous (adjective): showing great attention to detail; very careful and precise (सूक्ष्म/ विस्तार पर बहुत ध्यान देना)
Unprecedented (adjective): never done or known before (अभूतपूर्व)
Conducive (adjective): helping or making something happen (सहायक या किसी का कारण बनना)
Fester (Verb): (used about an unpleasant situation, feeling or thought) to become more unpleasant because you do not deal with it successfully (अप्रिय स्थिति आदि का) सफलतापूर्वक न निपटाए जाने के कारण और अधिक कटु हो जाना)