Rancorous(adjective)
Characterized by bitterness or long-lasting resentment.
Hindi meaning:कटु, द्वेषपूर्ण
Synonyms: Bitter, Malicious, Hostile, Spiteful
Antonyms: Friendly, Benevolent, Kind, Amiable
Example: The debate soon turned into a rancorous argument filled with personal attacks.
Trick to remember: Rancorous = ‘Ran + quarrels’ → jo hamesha quarrel aur hatred me rahe, vo rancorous hota hai. 
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