Negative prefixes are added to the beginning of a word to give it the opposite meaning.
Common negative prefixes include:
un- ("happy" → "unhappy," meaning "not happy")
in- (, "correct" → "incorrect," meaning "not correct")
im- (used before words starting with "m" or "p," e.g., "possible" → "impossible," meaning "not possible")
ir- (used before words starting with "r," e.g., "responsible" → "irresponsible," meaning "not responsible")
dis - disagree (from "agree," meaning "not agree")