Misinform refers to providing incorrect or untrue information to someone intentionally. The antonym for 'misinform' is not limited to a single word as there are several words that can be used to mean the opposite. To provide the correct information, we can use words like "inform," "educate," "correct," "enlighten," "accurate," and "truthful." These words convey the opposite of misinform, which is essentially to provide accurate and truthful information. It is important to ensure that we are providing the correct information to others and not spreading any incorrect information that may lead to misunderstandings or confusion.