Dictionary.com

my

[ mahy ]
/ maɪ /

pronoun

(a form of the possessive case of I used as an attributive adjective): My soup is cold.

interjection

Also my-my. (used as an exclamation of mild surprise or dismay): My, what a big house this is! My-my, how old he looks!

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One tiny word, two letters, yet it has a long history and a powerful punch. How did we start using "my" as an exclamation?

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Origin of my

1125–75; Middle English mī, variant of mīn,Old English mīn;see mine1

grammar notes for my

See me.

Words nearby my

Mwanza, Mweru, MWP, M.W.T., Mx, my, myalgia, myalgic encephalopathy, myalism, myall, Myambutol

Definition for my (2 of 2)

my-

variant of myo- before some vowels: myalgia.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for my (1 of 4)

my1
/ (maɪ) /

determiner

of, belonging to, or associated with the speaker or writer (me)my own ideas; do you mind my smoking?
used in various forms of addressmy lord; my dear boy
used in various exclamationsmy goodness!

interjection

an exclamation of surprise, awe, etcmy, how you've grown!

Word Origin for my

C12 mī, variant of Old English mīn when preceding a word beginning with a consonant

British Dictionary definitions for my (2 of 4)

my2

the internet domain name for

Malaysia

British Dictionary definitions for my (3 of 4)

MY

abbreviation for

motor yacht

British Dictionary definitions for my (4 of 4)

my-

combining form

a variant of myo-
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for my (1 of 2)

My

abbr.

myopia

Medical definitions for my (2 of 2)

my-

pref.

Variant ofmyo-
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.