noun
spoilt child; pampered child
Refers to a child who is overly dependent on parents or adults, often seeking attention and affection. Can be used affectionately or critically.
あの子は甘えっ子で、いつもお母さんにべったりだ。
That child is a spoilt child, always clinging to their mother.
弟は甘えっ子だから、一人で何もできない。
My younger brother is a pampered child, so he can't do anything by himself.