Anonymous(adjective)
Meaning: (of a person) not identified by name; of unknown name.
Hindi meaning:अज्ञातकृत, गुमनाम
Synonyms: Unknown, Unidentified, Nameless, Undisclosed
Antonyms: Known, Named, Identified, Famous
Example: An anonymous businesswoman donated one million dollars to the charity.
Trick to remember: Jiska nam gumnam ho wo anonymous hota h 
