to grow timid; to cower; to shrink; to lose one's nerve
to become perverse; to become contrary; to become warped; to become withdrawn
to be cramped; to be constrained
怒られていじけてしまった。
I cowered after being scolded.
彼は注意されていじけている。
He's sulking after being scolded.
狭い部屋でいじけている。
I feel cramped in this small room.