RichThesaurus
caution about
caution about
synonyms
give advance warning
premonish
tip someone the wink about
put on one's guard about
forewarn
clue in about
give notice
advise
prewarn
warn
inform
tip off about
warn in advance
give fair warning
put wise to
apprise
put in the picture about
alert about
caution about
antonyms
take by surprise