См. также: чужак, чужая цивилизация, чужие войска, чужой
"I told him I don't want to see him enter another tunnel, but let's see, he may insist on going back," he said and added that if it wasn't his son, someone else's son would have to do this risky work." (BBC)
He married you, taking on another man's son — a young man with many problems. (Daily Mail)
