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.

---

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

It was a small enough step from that to putting up the twinning sign.

From BBC • Dec. 23, 2023

There’s a case to be made for the twinning of these events.

From Washington Post • May 19, 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