ceo

ceo is the alternative letter-case form of CEO.

Noun capitalized: CEO

CEO (countable and uncountable, plural CEOs)

(abbreviation, countable, initialism) Initialism of chief executive officer.
- CEOs who once made 50 times the average worker’s salary made more than 500 times as much in 2001.2010 December 4, Evan Thomas, “Why It’s Time to Worry”, in Newsweek
- Stack ranking had come into fashion after GE CEO Jack Welch used a similar system, called rank-and-yank, to turn around that company in the 1980s and 1990s.2015 January 2, Nicholas Carlson, “The Day Marissa Mayer's Honeymoon At Yahoo Ended”, in Business Insider, archived from the original on 24 Sep 2022
1. (Internet, humorous) A notional title for a leading partaker in, or advocate of something or someone.
  - Hey. CEO. Of. Racism. Made. You. Some. Lunch. 👊🏾 .😡2019 August 27, Dennis Rodman, “Archived copy”, in Twitter, archived from the original on 27 Aug 2019
(UK, abbreviation, countable, initialism) Initialism of civil enforcement officer.
(abbreviation, acronym) Acronym of current engine option.
(Philippines, abbreviation, initialism) Initialism of city engineering office.

CEO (third-person singular simple present CEOs, present participle CEOing, simple past and past participle CEOed)

(informal, intransitive) To serve as the chief executive officer (CEO) of an organization or company.
- Daddy-David's answer was CEOing. He'd CEOed at three companies, most recently as head of an electronic sensor manufacturer. “He's completely turned them around in less than a year,” Lise trilled, “and never missed Friday afternoon Bible study.”2018, Michael Andreoni, The Window Is a Mirror, Livonia, MI: BHC Press, →ISBN, page unknown
- “We’d like you to be our CEO,” the board would say, and the CEO would say “sounds great but I am also the CEO of another company, is that a problem,” and the board would say “yes of course that’s a problem, we meant you’d quit your other CEO job and work for us, that’s how CEOing works, […]”2020 March 2, Matt Levine, “Twitter Owner Wants Full-Time CEO”, in Bloomberg, archived from the original on 25 Mar 2020

Noun
plural	ceos
plural	CEOs
alternative form	C.E.O.
alternative form	C. E. O.
alternative form	ceo
Verb
third-person singular present	CEOs
present participle	CEOing
past participle	CEOed
past	CEOed

What does ceo mean?: Ceo means a notional title for a leading partaker in, or advocate of something or someone.
What is ceo the alternative letter-case form of?: Ceo is the alternative letter-case form of CEO.
What part of speech is ceo?: Ceo can be a noun or a verb.
What is the plural of ceo?: The plural of ceo is ceos.

Adapted from Wiktionary: ceo (page history and authors); CEO (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-CEO.wav.

Cite this entry: “ceo.” Word.ws, https://word.ws/ceo. Based on Wiktionary, CC BY-SA 4.0.