Crossword clues for Hmm ... is that so! 4 lettersAnswerClueISEEMmm-hmm, mmm-hmmISEEMm-hmm, mm-hmmUHNOHmm ... no chanceMYMYHmm, what do we have here?UHNOHmm, I don't think soISEEShrink's "Mm-hmm"ISEEComment often after "Hmm ..."ISEEHmm, yes ...ISEEHmm, OKISEEHmm, interesting...ISITHmm, let me guess ...UHNOHmm ... don't think soISEEHmm . . .ISEEMm-hmm, it's clear nowISEEMm-hmm!ISEEUm-hmmISEEOh, hmm ...ISEEHmm ... is that so!IPUTHmm, how shall ___ this?UMNOLet me think ... hmm, I don't think soYEAHMm-hmmISEEHmm, makes senseISEEHmm ... hadn't considered thatWELL'"Hmm ..."UHNOHmm ... not likelyUHNOHmm ... doubt itITISMm-hmmIBETMmm-hmm. If you say soAHOKHmm ... I see nowOHOKHmm, I guess soOHOKHmm, gotchaUHNOHmm ... I doubt thatAREA___ 51 (U.F.O. landing site? ... hmm)DEEPLike things that make you go "hmm ..."OHOKHmm, I guess that's all rightISEEMmm-hmmUHNOHmm ... bad ideaHMMConsideration exclamationHMMLet's see ...HMMContemplation exclamationHMMLemme see ...HMMI wonder...HMMSound of turning gearsHMMContemplator's commentHMMSudoku solver's soundHMMThoughtful utteranceHMMResponse to a teaserHMMVery interesting...HMMI'm thinking...HMMSound of contemplation