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Something somebody says when they are thinking about what you have just said. They have an opinion.. but dont want to tell you what it is.
Person A: I believe in faeries
Person B: Hmm (secretly thinking.. Idiot).
by Rach June 08, 2003
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The universal interjection of a true philosophical and political thinker.
Guy 1: So what's your take on Obama's health care plan?
Guy 2: Hmm...

(five minutes later)

Guy 2: this guy's like, the President, right?
by Dude in Your Pants December 06, 2009
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A phrase commonly used for absolutely no reason at all. Although sometimes it is used while thinking, it's mostly used during awkward pauses just to fill in the gap of silence, or just cause.
Alyssa: Coolsicles :)

30 seconds later...

Alyssa: Hmm.
Holden: What is it?
Alyssa: Nothing... I just like saying hmm.
Holden: Ok... weird girl.
by That_One_BV_Guy July 02, 2009
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How to acknowledge someone when they've said something, and you didn't hear n/or care about what they said.
"I have a rash on my back."
by TenorBuddy May 11, 2004
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a word u use wen theres nothing else to say
hmm ..........................
by me December 09, 2003
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What one says on a computer or phone to make sure the other person is still there and will respond after a long pause in communication.
"Hmm ... ( Did my connection die again!? Are you there!? Answer! )
by Shaina Carmel Indovino April 22, 2003
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