неи́стовый — meaning in English

neistovyy

English meaning

berserk adj Out of control with rage or excitement; wildly violent or frenzied.
boisterous adj Loud, energetic, and a bit rowdy; full of noisy enthusiasm.
fierce adj Aggressively powerful, intense, or savage.
frantic adj Wild with panic, worry, or urgency.
frenetic adjective Fast, intense and slightly out of control, in a way that suggests hurried energy or agitation.
rabid adjective Infected with rabies.
rampant adj Spreading or occurring widely and without restraint, often in a negative or alarming way.
stormy adj Marked by storms or violent weather.
vehement adj Expressing very strong feelings in a forceful way.
violent adj Using or involving physical force meant to hurt or kill.

неи́стовый is used for these senses in English:

berserk Furiously, injuriously, or maniacally violent or out of control.
boisterous Characterized by violence and agitation; wild; stormy.
fierce Exceedingly violent, severe, ferocious, cruel or savage.
frantic In a state of panic, worry, frenzy, or rush.
frenetic Frenzied and frantic, harried; having extreme enthusiasm or energy.
rabid (by extension) Furious; raging; extremely violent.
rabid (figurative) Very extreme, unreasonable, or fanatical in opinion; excessively zealous.
rampant Rife, or occurring widely, frequently or menacingly.