outgrow v.
1. 長大了便不再適用
outgrow one's clothes 個子長大了衣服穿不下
2. 長大成熟而不再
He has outgrown his credulity. 他已長大成熟而不再輕信。
3. 長得比...快(或大、高)
By the time he was ten, he had outgrown his older brother.
他十歲的時候就已經長得比他哥哥高了。