tipster
/ˈtɪpstər/
noun
- A person who gives advice or information, especially about which horse or team is likely to win a race or game, or about which stocks are likely to be profitable.
- The racing tipster predicted the winner of the Kentucky Derby.
- My uncle is a stock market tipster who shares investment advice with friends.
- The sports tipster's website claimed an 80% success rate on football predictions.
- A person who secretly gives information to the police or authorities, especially about a crime.
- The tipster's report led to the arrest of the suspect.
- Police offered a reward for any tipster who could help solve the case.
- An anonymous tipster called the police with information about the burglary.