A warning is something that makes us aware of possible danger. There are a number of ways of warning someone. Warnings can be weak or strong. … A warning is an advance notice of something that will happen, often something unpleasant or dangerous. The soldiers opened fire without warning. Warning: Directed by Agata Alexander. With Thomas Jane, Tomasz Kot, Toni Garrn, Rupert Everett. The meaning of life explored through multiple interconnected lives set in the near future. She gave me a warning about the difficulties of the job. There were storm warnings [=warnings that a storm was approaching] issued for the area. She issued a stern warning against making changes too quickly. Let that be a warning to you. Synonyms for WARNING: caution, forewarning, alert, advice, recommendation, admonition, admonishment, suggestion; Antonyms of WARNING: permission, green light, OK, go-ahead, all clear, risking, imperiling Define warning. warning synonyms, warning pronunciation, warning translation, English dictionary definition of warning. n. 1. A statement telling of or an indication providing evidence of impending danger, difficulty, or misfortune: The government issued a warning about. All cigarette packets carry a warning. The bombs fell completely without warning. A warning is a caution against something dangerous. When there's a shark warning at the beach, the lifeguards will order everyone out of the water. When you receive a warning, you get an official advance notice of some impending problem. Explanation A warning is a caution against something dangerous. When there's a shark warning at the beach, the lifeguards will order everyone out of the water. When you receive a warning, you get an official advance notice of some impending problem. The meaning of WARNING is the act of warning : the state of being warned. How to use warning in a sentence.