Dubious(adjective)
Not certain about something and suspecting that something may be wrong.
Hindi meaning:अनिश्चित
Synonyms: Doubtful, Uncertain, Unsure, Questionable
Antonyms: Certain, Sure, Likely, Undoubted
Example: I was rather dubious about the whole idea.
Trick to remember: Doubt hai dubious hai. 
