Added 7 October 2026 ceo noun Categories: PeopleUncommon Words noun ! Definition from WordNet 3.1, Princeton University. More about ceo at Wordnik → Where our words come from → The corporate executive responsible for the operations of the firm; reports to a board of directors; may appoint other managers (including a president). Related Words: cfogdpvipcdpedmdpmoscdlidgsfep Back to today's word