co-host

American  

[koh-hohst, koh-hohst, koh-hohst] / ˌkoʊˈhoʊst, ˈkoʊˌhoʊst, ˈkoʊˌhoʊst /

Or cohost

verb (used with or without object)

1. to host (a program) jointly with at least one other person.

   It’s a daily talk show co-hosted by three women.

   They were a beloved comedy duo who cohosted on radio for 14 years before taking their variety hour to television.

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noun

1. a person who hosts a program jointly with at least one other person.

   Everyone was surprised when his co-host left the show at the peak of its popularity.

Etymology

Origin of co-host

First recorded in 1905–10 for the noun; co- ( def. ) + host ¹ ( def. )

Example Sentences

France and Britain will co-host a video conference Friday of countries ready to contribute to a "purely defensive mission" to secure the Strait of Hormuz, the French president's office said.

From Barron's • Apr. 14, 2026

On “Fox & Friends,” co-host Ainsley Earhardt bluntly asked “why now” at the start of an interview with the first lady’s top adviser the next day.

From Salon • Apr. 13, 2026

The co-host of the ‘HardLore’ podcast was 38.

From Los Angeles Times • Apr. 9, 2026

I asked Chris Lintott, Professor of Astrophysics at the University of Oxford and co-host of BBC's series The Sky at Night for his opinion.

From BBC • Apr. 5, 2026

In 1975 he became the traveling co-host of Good Morning America on ABC network; in the 20 months that followed, his assignments took him to more than two dozen countries.

From 100 New Yorkers of the 1970s by Millard, Max