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Use "h'm" in a sentence
"Not uncommon - close city climate - nothing serious, but unpleasant enough ... h'm, three grains should do it, I think ..."
"I've had the greatest pleasure in getting up this little thing, and I'd made up my mind to propose Mrs Greenow's health; but, h'm, ha, no doubt it has been in better hands."
"He was a little sad because he was going to have to leave his beloved models behind h'm."