Vital(adjective)
Necessary or essential in order for something to succeed or exist.
Hindi meaning:अनिवार्य
Synonyms: Essential, Critical, Important, Integral
Antonyms: Unimportant, Unnecessary, Needless, Minor, Nonessential
Example: Patience and a cool head are vital for investors.
Trick to remember: Book ka title vital hota hai. 
