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the prodigal son
One who has returned after spending time away doing or pursuing something that was not condoned by the family or organization they had left, and who is now repentant for their actions. The phrase comes from a parable in the Bible about a son who leaves his father to seek his fortune and returns humbled. Well, looky here, the prodigal son has returned. Guess you didn't like that fancy new company that poached you last year.
prodigal sona person who leaves home to lead a spendthrift and extravagant way of life but later makes a repentant return.
The biblical parable of the prodigal son in Luke 15: 11–32 tells the story of the spendthrift younger son of a wealthy man who leaves home and wastes all his money. When he repents of his extravagant ways and returns home, he is joyfully welcomed back by his father. See also kill the fatted calf (at fatted).