ichidan verb, intransitive verb
Typically used in the fixed expression 気がふれる. Describes a state of mental derangement or insanity.
See also: 気がふれる
あまりのショックで気がふれそうになった。
I almost went mad from the shock.
彼は気がふれたように叫び続けた。
He kept screaming as if he had lost his mind.