Origin of Warn
From a combination of Old English wiernan (from Proto-Germanic *warnijanÄ…; compare Danish værne) and Old English wearnian (from Proto-Germanic *warnōnÄ…; compare Swedish varna).
Old English warnian, from Proto-Germanic *warnōnÄ…. Cognate with German warnen, Dutch waarnen.
Middle English warnen from Old English warnian wer-4 in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
Find Similar Words
Find similar words to warn using the buttons below.