Meaning of hm in English hmexclamation (also h’m); (hmm) us Your browser doesn't support HTML5 audio /həm/ a sound made when someone is thinking about something or needs more time to decide what to say Want to learn more? Improve your vocabulary with English Vocabulary in Use from Cambridge.Learn the words you need to communicate with confidence. (Definition of hm from the Cambridge Academic Content Dictionary © Cambridge University Press) HM | Business English HMadjective [ before noun ] uk Your browser doesn't support HTML5 audio us Your browser doesn't support HTML5 audio GOVERNMENT abbreviation for Her (or His) Majesty's: belonging to or being a part of the government of the UK: HM Inspector of Taxes HM Treasury is planning a substantial tax increase on tobacco. See also HMG HMRC (Definition of HM from the Cambridge Business English Dictionary © Cambridge University Press) What is the pronunciation of hm? Browse hives hiya HK hl hm HM Revenue & Customs HMG hmm HMO