prewarn

verb pre·warn \ ˌprē-ˈwȯrn \
variants: or pre-warn

Definition of prewarn

prewarned or pre-warned; prewarning or pre-warning
: to warn (someone) beforehand : forewarn
  • … in 1951, the network began to unravel, and two of its members, Donald Maclean and Guy Burgess, prewarned by fellow conspirators, jumped the night ferry to St.-Malo …
  • —Stephen Koch

First Known Use of prewarn

circa 1624

in the meaning defined above

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