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Synonyms

on board

Idioms  

  1. Joining in or participating, as in The department head addressed the new employees, saying “Welcome on board,” or The opera company has a new vocal coach on board to help the soloists. This expression alludes to being on or in a vessel, airplane, or other vehicle. [Colloquial; second half of 1900s]

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

On board were 114 passengers and 61 crew members from 22 countries.

From BBC • May 10, 2026

On board the Hondius were 149 people from 23 different nations including the U.S.,

From The Wall Street Journal • May 7, 2026

On board, people snapped selfies with the cub before reuniting it with its mom.

From Los Angeles Times • May 2, 2026

On board, Chiu spotted a large, bright object approaching, but by the time he recognised it as another vessel, it was too late.

From Barron's • Dec. 2, 2025

On board the ship, the speakers are playing an electronic track pirated from an unreleased Frankie Dena album.

From "Warcross" by Marie Lu

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.