warning

1 the act or an instance of telling beforehand of danger or risk she delivered a strict warning that anyone who was caught stealing would be fired Synonyms admonishment, admonition, alarm (also alarum), alert, caution, forewarning, heads-up, notice Related Words auguring, augury, forecasting, foretelling, predicting, prediction, premonition, presaging, prognosticating, prophecy (also prophesy), prophesying; apprising, informing, notification, notifying, tip-off; advice, counsel, guidance, recommendation, suggestion, tip; announcement, declaration

2 something that tells of approaching danger or risk the ominously darkening sky was a warning that a tornado was approaching Synonyms caution, red flag, red light, tip-off, tocsin, wake-up call Related Words omen, portent, premonition, presage; notice, notification; buoy, indicator, knell, sign, signal; foretaste, foretoken; announcement, declaration Phrases handwriting on the wall Near Antonyms all clear