twinning

American  

[twin-ing] / ˈtwɪn ɪŋ /

noun

1. the bearing of two children at one birth.

2. the coupling of two persons or things; union.

3. Crystallography. the union of crystals to form a twin.

4. an act or instance of matching or resembling someone or something in a specific way, and the acknowledgment of this resemblance (often used attributively): I love those twinning outfits.

   accidental twinning;

   I love those twinning outfits.

   Look at their twinning duckfaces.

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Etymology

Origin of twinning

First recorded in 1565–75; twin ¹ + -ing ¹

Example Sentences

But all those efforts at twinning are a bit futile.

From The Wall Street Journal • Oct. 31, 2025

Andy Burnham said Manchester has a twinning arrangement with Wuhan, which was the epicentre of the Covid pandemic.

From BBC • Nov. 27, 2023

Because two to three weeks after conception, twinning might occur.

From Washington Post • May 18, 2022

Jessica Beck, a curator at the Andy Warhol Museum in Pittsburgh, came up with the idea of twinning the artists as a way of reintroducing Marisol and showing the overlap of ideas and influence.

From New York Times • Apr. 27, 2022

On the refrains her voice spun, twinning and mixing with my own.

From "The Name of the Wind" by Patrick Rothfuss