Dictionary

um

interjection \a prolonged m sound, əm\

—used when you hesitate because you are not sure about what to say

Full Definition of UM

—used to indicate hesitation <well, um, I don't know>

First Known Use of UM

1672

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4 ENTRIES FOUND:
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May 23, 2015
debouch Hear it
to emerge or cause to emerge
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