utter(redirected from utterer)
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Related to utterer: ureter
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not utter a word
To be completely silent; to remain discreet (about something); to not tell anyone (about something). All the while our father was shouting at us, my sister and I didn't utter a word. Tom, don't you dare utter a word about this! I would die of embarrassment if anyone were to find out.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
not open one's mouthand not utter a word
Fig. not to say anything at all; not to tell something (to anyone). Don't worry, I'll keep your secret. I won't even open my mouth. Have no fear. I won't utter a word.
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
not open one's mouth
Also, shut one's mouth; not say or utter a word . Be silent, repress one's feelings or opinions, keep a secret. For example, Don't worry, I'm not going to open my mouth on this issue, or She promised not to say a word about it to anyone. Also see hold one's tongue; keep one's mouth shut.
utter a word
see under not open one's mouth.
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.