"forewarning" in the noun sense
1. forewarning, premonition
an early warning about a future event
"forewarning" in the verb sense
1. forewarn, previse
warn in advance or beforehand give an early warning
"I forewarned him of the trouble that would arise if he showed up at his ex-wife's house"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License