berserk
adjective
[ bəˈzəːk ]
• out of control with anger or excitement; wild or frenzied.
• "a man went berserk with an arsenal of guns"
Similar:
mad,
crazy,
insane,
out of one's mind,
hysterical,
beside oneself,
frenzied,
crazed,
demented,
maniacal,
manic,
frantic,
wound up,
worked up,
raving,
wild,
enraged,
raging,
out of control,
uncontrollable,
amok,
on the rampage,
off one's head,
up the wall,
through the roof,
off the deep end,
ape,
bananas,
bonkers,
mental,
nutty,
nuts,
bats,
hyper,
spare,
crackers,
barmy,
batty,
postal,
crook,
berko,
apeshit,
Origin:
early 19th century (originally as a noun denoting an ancient Norse warrior who fought with wild or uncontrolled ferocity): from Old Norse berserkr (noun), probably from birn-, bjorn (see bear2) + serkr ‘coat’, but also possibly from berr ‘bare’ (i.e. without armour).
