An easy one for the educated amongst you! As my book is being edited in house, that house being ours house... I am at an impasse with my editor, she being the one with the an education unlike me!!! I think Hmm she thinks Mmm. Context I can hear from here every one shouting, Ok I will put it into context.
"The handsome looks... hmm, well maybe! however, just now they were hidden behind the grime and grit that also covered his clothes.
or mmm
My Wife, sorry my editor thinks that modern day speech has changed it to the latter. Well who is going to be smug, the educated one or me?
Thank you, Paul.
I'd say Hmm has negative connotations and Mmm positive. So you win!