| AM | • am v. First-person singular present indicative of be. • am cont. (Informal or dialectal) Contraction of I am. • am adv. Alternative spelling of a.m. |
| EM | • em n. The name of the Latin-script letter M/m. • em n. (Typography) A unit of measurement equal to the height of the type in use. • em pron. Alternative form of ’em. |
| HM | • hm interj. A shorter variant of hmm. • hm sym. (Metrology) Symbol for hectometer (hectometre), an SI unit of length equal to 102 meters (metres). • HM n. Initialism of His Majesty (the title of a king). |
| MA | • ma n. (Astronomy, usually in the plural) Abbreviation of milli-arcsecond. • ma n. (Colloquial, and in direct address) mother, mama. • ma n. (Colloquial) The landlady of a theater. |
| ME | • me pron. As the direct object of a verb. • me pron. (Archaic, proscribed) Myself; as a reflexive direct object of a verb. • me pron. As the object of a preposition. |
| MI | • mi n. (Music) A syllable used in sol-fa (solfège) to represent the third note of a major scale. • mi n. Alternative form of mi.. • mi sym. (International standards) ISO 639-1 language code for Maori. |
| MM | • mm n. Abbreviation of month (in two-digit numeric format, as in: dd/mm/yyyy). • mm interj. Alternative form of mmm. • mm sym. (Metrology) Symbol for millimetre (millimeter), an SI unit of length equal to 10-3 metres (meters). |
| MO | • mo adv. (Obsolete) To a greater degree. • mo adv. (Now dialectal) Further, longer. • mo adj. (Archaic, dialectal) Greater in amount, quantity, or number (of discrete objects, as opposed to more… |
| MU | • mu n. The 12th letter of the Modern Greek alphabet. • mu interj. (Zen Buddhism) Neither yes nor no. • mu n. (Zen Buddhism) Nothingness; nonexistence; the illusory nature of reality. |
| MY | • my det. First-person singular possessive determiner. See Appendix:Possessive#English. • my interj. Used to express surprise, shock or amazement. • my sym. (International standards) ISO 639-1 language code for Burmese. |
| OM | • om n. (Hinduism, Buddhism) A sacred, mystical syllable used in prayer and meditation. • om v. (Intransitive) To chant the sacred syllable om. • om interj. (Colloquial) Clipping of nom. |
| UM | • um interj. Expression of hesitation, uncertainty or space filler in conversation. See uh. • um interj. (Chiefly US) Dated spelling of mmm. • um v. (Intransitive) To make the um sound to express uncertainty or hesitancy. |