HM n. Initialism of Her Majesty. (the title of a queen).Click to see full answer. Keeping this in view, is Hm a valid Scrabble word?Yes, hm is in the scrabble dictionary.Subsequently, question is, how do you spell Hm? Correct spelling for the English word “hm” is [ˌe?_t?_ˈ?_m], [ˌe??t??ˈ?m], [ˌe‍?t‍?ˈ?m]] (IPA phonetic alphabet). Consequently, whats does HM mean? HM is the written abbreviation for Her or His Majesty or Her or His Majesty’s. It is used as part of the name of some British government organizations, or as part of a person’s title.Is Hm a word in Words With Friends?HM is a valid scrabble word.