An example of warn is to tell someone that there is a slippery road ahead.
Warned boaters of the coming storm; warned me that they might be delayed.
Warned that the bolts needed to be replaced.
Warned us to be careful; warned us not to stay up too late.
The ranger warned hikers away from the cliff.
Warned against smoking in the building.
He was warned against crossing the railway tracks at night.
Don't let me catch you running in the corridor again, I warn you.
Origin of warn
- Middle English warnen from Old English warnian wer-4 in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From a combination of Old English wiernan (from Proto-Germanic *warnijanÄ…; compare Danish vÃ¦rne) and Old English wearnian (from Proto-Germanic *warnÅnÄ…; compare Swedish varna).
- Old English warnian, from Proto-Germanic *warnÅnÄ…. Cognate with German warnen, Dutch waarnen.