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ber·serk(bər-sûrk′, -zûrk′, bə-)
1. Destructively or frenetically violent: a berserk worker who started smashing all the windows.
2. Mentally or emotionally upset; deranged: berserk with grief.
3. Informal Unrestrained, as with enthusiasm or appetite; wild: berserk over chocolates.
1. One that is violent, upset, or unrestrained.
2. A berserker.
[Back-formation from berserker.]
frenziedly violent or destructive (esp in the phrase go berserk)
(Norse Myth & Legend) Also called: berserker a member of a class of ancient Norse warriors who worked themselves into a frenzy before battle and fought with insane fury and courage
[C19: Icelandic berserkr, from björn bear + serkr shirt]
1. violently or destructively frenzied: to go berserk.n.
2. (sometimes cap.) Also, ber•serk′er. a devotee of Odin in early Norse society who fought with frenzied rage in battle.
[1865–70; < Old Norse berserkr]
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|Noun||1.||berserk - one of the ancient Norse warriors legendary for working themselves into a frenzy before a battle and fighting with reckless savagery and insane fury|
|Adj.||1.||berserk - frenzied as if possessed by a demon; "the soldier was completely amuck"; "berserk with grief"; "a berserk worker smashing windows"|
insane - afflicted with or characteristic of mental derangement; "was declared insane"; "insane laughter"