Synonyms:
mum, silent
Meaning: failing to speak or communicate etc when expected to; "the witness remained silent"
Usage examples
'No, mum.
'Yes, mum.'
'Yes, mum.'
'Striking right out, mum, and coming round beautiful.'
"I told her you would not be there, mum," whispered Caleb.
Sh!--keep mum, but just you confine yourself to that diet and you're all right.
'Even as to that, mum,' answered the ecstatic Sloppy, 'the turning might be done in the night, don't you see?
They were amazed that any one could be so mean, and longed to tell their Aunt Allison all about it; still, one of the conditions on which they had bought the bear was that they were to "keep mum," and they stuck strictly to that promise.