1. to warn in advance; to give advance notice of something potentially harmful or problematic
Usage: transitive verb

Examples

• The weather service prewarned residents about the approaching hurricane.
• I should prewarn you that the meeting might run late.
• The company prewarned employees about upcoming layoffs.
• The doctor prewarned the patient about possible side effects.
• We were prewarned that the road would be under construction.
• The teacher prewarned students about the difficulty of the final exam.