Synonyms of the word

forewarning

• v. present participle of forewarn.
• n. An advance warning; an omen.

premonition

• n. A clairvoyant or clairaudient experience, such as a dream, which resonates with some event in the future.
• n. A strong intuition that something is about to happen (usually something negative, but not exclusively).

warning

• v. present participle of warn.
• n. The action of the verb warn; an instance of warning someone.
• n. Something spoken or written that is intended to warn.
• interj. Used to warn of danger in signs and notices.