Learn English – What do the parents of married children call each other? As in, the mother of the bride to the mother of the groom

kinship-terms

I am looking for an expression or term that would describe the relationship between the two mothers of their married children.

Best Answer

There's a specific term for the relationship between people whose children marry each other: co-parents-in-law.

The relationship between people whose children marry each other: the parents of the bride vis-à-vis the parents of the groom.

(Wiktionary)

The Wiktionary entry additionally includes usage notes stating that in normal conversation the generic "in-laws" may be used, although this could be ambiguous.

To avoid ambiguity in everyday speech you can rely on context, or use phrases such as "my son-in-law's mother" or "my daughter-in-law's mother".

Wiktionary also lists coordinate terms such as:

  1. co-mother-in-law
  2. co-father-in-law

Co-mothers-in-law specifically answers your question:

The relationship between women whose children marry each other; the mother of the bride vis-à-vis the mother of the groom.

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