man of his word

man of his word idiom
A man who keeps promises, who can be trusted, as in You can count on Rudy—he's a man of his word. This expression, which uses word in the sense of “a promise or undertaking,” was first recorded in 1542.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Comments
Improve this definition.
Do you have more to add? Share your linguistic knowledge or observation.
/Register to save your comments.