a type of venomous snake belonging to the Viperidae family

metaphorically used to describe a cunning or deceitful person

कपटी या धोखेबाज़ व्यक्ति

English Usage: He was as treacherous as a vipera, always looking for opportunities to betray others.

Hindi Usage: वह एक विपेरा की तरह कपटी था, हमेशा दूसरों को धोखा देने के अवसरों की तलाश में।