My Definition
mī
adjective
Used as a modifier before a noun.
My boots; my accomplishments.
American Heritage
Used preceding various forms of polite, affectionate, or familiar address.
My friend, you are so right.
American Heritage
Used in various interjectional phrases.
My word! My goodness!
American Heritage
Of, belonging to, made by, or done by me.
My Lord, my dear Mr. Brown.
Webster's New World
interjection
Used to express surprise, dismay, disbelief, etc.
Oh, my! my goodness! my eye!
Webster's New World
abbreviation
May.
Webster's New World
Wiktionary
affix
Webster's New World
Origin of My
-
Middle English mi from Old English mīn me-1 in Indo-European roots Interj., short for My God!
From American Heritage Dictionary of the English Language, 5th Edition
