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Co-founder or cofounder?

co-founder is a noun meaning “Alternative form of cofounder”; cofounder is a noun meaning “A joint founder; one of several people involved with the creation of a…”. co-founder is written with a hyphen and cofounder as one word; they are used differently.

co-founderorcofounder

What is the difference between co-founder and cofounder?

co-foundercofounder
Part of speechnounnoun
Meaning

Alternative form of cofounder

A joint founder; one of several people involved with the creation of a business, organization, union, or entity

Examplenone recordedThe two cofounders both attended the ceremony
Formsco-founderscofounders
Pronunciationnot recorded/kəʊˈfaʊndə/ /ˈkoʊ(ˌ)faʊndɚ/ /ˌkoʊˈfaʊndɚ/
In writingnot counted (the list counts single words)about once in every 3 million words

Sources: co-founder and cofounder in the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

Every current meaning of co-founder and cofounder

co-founder

  1. 1

    noun Alternative form of cofounder

cofounder

  1. 1

    noun A joint founder; one of several people involved with the creation of a business, organization, union, or entity

    The two cofounders both attended the ceremony

Source: the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); obsolete, archaic, dialect and rare senses left out.

Which is more common, co-founder or cofounder?

co-founder is a phrase, which the list of single words does not count; cofounder about once in every 3 million words.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

The words