forewarn

verb forewarn

• dissuade — to deter by advice or persuasion; persuade not to do something (often followed by from): She dissuaded him from leaving home.
• admonish — If you admonish someone, you tell them very seriously that they have done something wrong.
• apprise — When you are apprised of something, someone tells you about it.
• alarm — Alarm is a feeling of fear or anxiety that something unpleasant or dangerous might happen.
• tip — Eugene (Gladstone) 1888–1953, U.S. playwright: Nobel prize 1936.