at a word
In immediate response, at an instant. For example, At a word from the captain they lined up in order. [c. 1300]
Words Nearby at a word
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
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