Fatuity(noun)
(Pointless foolishness and stupidity)
Hindi meaning:मूर्खता/बेवकूफ़ी
Synonyms: Absurdity, Asininity, Foolishness, Idiocy, Stupidity
Antonyms: Intelligence, Shrewdness, Wisdom, Sagacity
Example: After receiving a windfall, the foolish man showed his fatuity by spending every dime on frivolous purchases.
Trick to remember: Zyada fat wali chize khana Fatuity hai. 
