ichidan verb, intransitive verb
become twisted; warp; be perverse
Describes something physically bending out of shape, or a person's personality becoming warped, stubborn, or rebellious. Often used for a contrary, cynical attitude.
湿気で板がねじけてしまった。
The board warped from the moisture.
彼はすっかりねじけた性格になってしまった。
He has developed a completely twisted personality.