to be peevish; to sulk; to pout
子供が拗ねて泣き出した。
The child started crying after throwing a tantrum.
子供は思い通りにならないと拗ねている。
The child sulks whenever things don't go their way.
どんなに怒られても彼は拗ねない性格だ。
No matter how much he's scolded, sulking just isn't in his nature.