Alacrity(noun)
Great happiness or enthusiasm.
Hindi meaning:तत्परता
Synonyms: Briskness, Willingness, Enthusiasm, Quickness
Antonyms: Reluctance, Unwillingness, Lethargy, Dullness
Example: They accepted the offer with alacrity.
Trick to remember: Alam ko har city me jaane ki alacrity hai. 
