The tipster spent most of his time studying and was able to snag a on his Verbal SATs at the age of One side has the word, one side has the definition. Define tipster: a person who gives useful information to someone — tipster in a sentence. a person who gives tips, especially about the likely winn Meaning, pronunciation, example sentences, and more from Oxford Dictionaries. The coolest nerds you will ever meet. Laura Lippman IN A STRANGE CITY English Dictionary Thesaurus Translator Scrabble Blog. Please help improve this article by adding citations to reliable sources. Sign up now Log in.