Tipoff, meaning a warning or a clue, has several antonyms that denote different meanings. One of the antonyms is "mislead" which means to provide false information, particularly to divert or deceive someone from the truth. Another antonym is "ignorance," which means lacking knowledge or awareness of something. "Obscurity" is another antonym for tipoff and refers to the state of being unknown, dark or difficult to understand. Lastly, "surprise" can be considered an antonym for tipoff as it is a sudden event or action that is unexpected or unanticipated. These antonyms for tipoff are essential to help convey a range of meanings accurately.