break one's word

break (one's) word

To fail to act as one has promised. Tom said he'd help us move, but he broke his word and failed to show. If you keep flaking out, you're going to become known as someone who breaks their word.
See also: break, word

break one's word

Violate or fail to observe a promise or contract one has made. For example, You can trust him implicitly; I've never known him to break his word. [c. a.d. 1000]
See also: break, word