- cradle-snatcher
- an older person marrying one much youngerIn everyday English, someone who steals a baby, not its bed. Usually of a man and sometimes as a verb. Also as cradle robber:They implied ungraciously that is the cradle-snatching Londoner and his fancygirl wanted to use the church, (le Carré, 1995)She was fifteen... Whoa. He'd shake a finger at himself. Fifteen. Cradle robber. Jailbait. (Turow, 1996)See also rob the cradle.
How not to say what you mean: A dictionary of euphemisms. R. W. Holder. 2014.