Wiktionary
forewarned, forearmed
prov. (alternative form of forewarned is forearmed English)
Usage examples of "forewarned, forearmed".
I'm afraid that ye're no scholar, Bishop, or ye'd know that I means forewarned, forearmed.
If she were to be destroyed, it would be better to be destroyed here, without giving any clue to where human beings might be found by a forewarned, forearmed alien battle fleet.