A berserk worker who started smashing all the windows.
Berserk over chocolates.
Berserk with grief.
An example of berserk is a puppy running around and chewing on everything for no apparent reason.
Origin of berserk
- Back-formation from berserker
From American Heritage Dictionary of the English Language, 5th Edition
- Old Norse berserkr (Icelandic berserkur), probably from bjǫrn (“bear”) + serkr (“coat”). Compare sark.