Son-out-law
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 A live-in boyfriend of one's child.
"“You also treated Haydar like your own son,” Didace observed. “He was my son-out-law, remember,” Henock prompted."
- 2 The ex-husband of one's child.
"The parents decided to give their daughter and “son-out-law” the cold shoulder."
Example
More examples"“You also treated Haydar like your own son,” Didace observed. “He was my son-out-law, remember,” Henock prompted."
Etymology
From son + -out-law, by analogy to son-in-law.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.