Answer: humph

AnswerCrossword Clue
HUMPHExpression of doubt.
humphto utter a grunt
humph(used to indicate disbelief, contempt, etc.)
HUMPH"See if I care!"
HUMPH"Well, I never!"
HUMPHDisparaging comment
HUMPHSound of disbelief
HUMPH"Be that way!"
HUMPHSound of doubt or disdain
HUMPHSkeptic's sound
HUMPHWord of disdain.
HUMPHScornful sound
HUMPHSound of doubt.
HUMPHExclamation of doubt.
HUMPHDisgruntled grunt
HUMPH"I don't like that at all!"
HUMPHDisgruntled word
HUMPHDisgruntled utterance
HUMPHSkeptical grunt
HUMPH"I don't think so!"
HUMPH"If you say so"