forewarn Meaning, Definition & Usage

  1. verb warn in advance or beforehand; give an early warning
    previse.
    • I forewarned him of the trouble that would arise if he showed up at his ex-wife's house

WordNet

Fore*warn" transitive verb
Wordforms
imperfect & past participle Forewarned ; present participle & verbal noun Forewarning
Definitions
  1. To warn beforehand; to give previous warning, admonition, information, or notice to; to caution in advance.
    We were forewarned of your coming. Shak.

Webster 1913