hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm 

When someone doesnt want to say no but are making it blatantly obvious.

Person 1: Hey you wanna go out sometime?
Person 2: Hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm by GristlyWaif January 25, 2018

hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm 

hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm mmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm by i hate my classmates April 9, 2022

HmmmmmmmmmmmmmmmmmmmMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm............................ 

a very very very very very very very very very very very very very very very very very very very very very very very very very very very very very very long way of saying "no" or "hmm" etc

Sam: wanna dance?
You: HmmmmmmmmmmmmmmmmmmmMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm............................
*awkward*
Sam: okayyy then

HmmmmmmmmmmmmmmmmmmmMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm............................ by HMMMMMMMM<M<MM March 25, 2019

hummumbling 

This occurs when someone only has a vague recollection of a song, and is attempting to sing it, but cannot remember all of the lyrics. As the person attempts to sing the song, they alternate humming, when they have no clue about the lyrics, with mumbling, when they think they can get away with the words they remember. The result is highly obnoxious.

Person 1: The hmm-mmm-mm don't like it, rock the hmm-mmmm, rock the hmmm-mmm.

Person 2: Dude, stop hummumbling the damn thing and put on the mp3.

hummumbling by Matthew F.. May 22, 2008

Hummm 

Pause....Think about it...Food for thought .... Need time to absorb

Hummm ... Let's see if this will work.

Hummm by Cee B October 11, 2018

Hmmmm 

Words of the Minecraft Villager species. It is a sacred language, ancient and powerful.

Hmmmm, Hmmm hmm hmm hmmmm hmmmm

Hmmmm by mommy? sorry, mommy? October 10, 2019

hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm 

when someone wants to waste your time with a long hmm

1. hey, you want to play fortnight?
2. hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm

hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm by reeeee vs oof February 26, 2019