organizer

American  

[awr-guh-nahy-zer] / ˈɔr gəˌnaɪ zər /

noun

1. a person who organizes, especially one who forms and organizes a group.

2. a person whse job is to enlist employees into membership in a union.

3. a person who organizes or schedules work.

   You would get this job done sooner if you were a better organizer.

4. a multiple folder or, sometimes, a notebook in which correspondence, papers, etc., are sorted by subject, date, or otherwise, for systematic handling.

5. Embryology. any part of an embryo that stimulates the development and differentiation of another part.

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organizer British  

/ ˈɔːɡəˌnaɪzə /

noun

1. a person who organizes or is capable of organizing

2. a container with a number of compartments for storage

   hanging organizers to keep your clothes smart

3. embryol any part of an embryo or any substance produced by it that induces specialization of undifferentiated cells

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Etymology

Origin of organizer

First recorded in 1840–50; organiz(e) ( def. ) + -er ¹ ( def. )

Example Sentences

Sierra Rodriguez is a 23-year-old political-campaign organizer in Colorado.

From MarketWatch • Apr. 3, 2026

Their team, Venetian Blinds, has won several contests, most recently an IQ test of 100 granular questions that the event organizer said took months to develop.

From The Wall Street Journal • Apr. 1, 2026

Their first meeting in a coffee shop drew five people — the number Indivisible suggests a would-be organizer initially aim to marshal.

From Salon • Mar. 28, 2026

Shabaz singled Gil out, as a lead organizer, for “aiding and abetting.”

From Slate • Mar. 25, 2026

The brilliant young organizer was experimenting, and always hoping that a misstep wouldn’t cause the entire enterprise to blow up in his face.

From "The Best of Enemies" by Osha Gray Davidson

Related Words

• coordinator
• designer
• developer
• promoter