The story
Back-formation from mother-in-law, father-in-law, brother-in-law, etc., equivalent to in + law.
Etymology from Wiktionary, CC BY-SA 4.0.
-in-law
Today it means: Related through marriage. Full definition →
Today it means: Related through marriage. Full definition →
Back-formation from mother-in-law, father-in-law, brother-in-law, etc., equivalent to in + law.
Etymology from Wiktionary, CC BY-SA 4.0.