Initialism of United Mexican States.

Third-person singular simple present indicative form of um

plural of um

plural of UM

(intransitive) To make the um sound to express uncertainty or hesitancy.

Alternative form of umbe

Expression of hesitation, uncertainty or space filler in conversation. See uh. / (chiefly US) Dated spelling of mmm.

(dated, sometimes humorous, often offensive) An undifferentiated determiner or article; a miscellaneous linking word, or filler with nonspecific meaning; representation of broken English stereotypically or comically attributed to Native Americans.

(rare, usually no longer productive, primarily in dialects, chiefly Scotland) Prefix meaning around, about.

Denotes transitive verbs in the trade pidgins used between English-speakers and indigenous populations; used derogatorily by extension in English by addition to any verb, transitive or not.