oh
1 Americaninterjection
-
(used as an expression of surprise, pain, disapproval, etc.).
Oh, just look at how pretty it is now that you've finished painting!
Oh, no! I misplaced my keys again.
-
(used in direct address to attract the attention of the person spoken to).
Oh, John, will you take these books?
noun
verb (used without object)
noun
abbreviation
-
Ohio (approved especially for use with zip code).
-
(used in digital communications) other half.
-
(used in digital communications) overheard.
interjection
abbreviation
Etymology
Origin of oh
First recorded in 1530–40; later spelling of O 2 ( def. )
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
And that’s what they want because, oh, that is the gold standard for clinical trials.
From The Wall Street Journal • May 7, 2026
He could be heard saying "oh my god" when the cue ball did not run through as expected.
From BBC • Apr. 27, 2026
But as ugly as greed can be, it can be oh so beautiful.
From Salon • Apr. 25, 2026
"Oh, my martyred child," he wailed, "oh my darling."
From BBC • Apr. 16, 2026
Hugo is the kind of boy you would probably not like me to spend my time with, but – oh, Mama – he’s so handsome!
From "Code Name Kingfisher" by Liz Kessler
![]()
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.