白頭偕老 [ㄅㄞˊ ㄊㄡˊ ㄒㄧㄝˊ ㄌㄠˇ; bai2 tou2 xie2 lao3] (to live together until the) white hairs of old age (idiom); to live to a ripe old age in conjugal bliss until death do us part ◄ ►