Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “oh”

oh

exclamation uk   /əʊ/ us    //
A1 used to express different emotions, such as surprise, disappointment, and pleasure, often as a reaction to something someone has said: "He's been married three times." "Oh, really? I didn't know that!" "I'm afraid I can't come to the party." " Oh, that's a shame." Is that for me? Oh, you're so kind! "I'm sorry I forgot to call you." "Oh, don't worry." A1 introduces an idea that you have just thought of, or something that you have just remembered: Oh, I've just thought of a problem. Oh, and don't forget to lock the back door. A1 used with other expressions of disappointment, sadness, anger, etc.: Oh dear, what a mess! Oh no, I've left my umbrella behind!

oh

noun [C] uk   /əʊ/ us    // (also o)
sometimes used in writing for the number zero: My phone number is five, double oh, seven, six, six.
(Definition of oh from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of oh?
Add Cambridge dictionaries to your browser to your website

Definitions of “oh” in other dictionaries

Word of the Day

look on the bright side

to find good things in a bad situation

Word of the Day

The language of work

by Kate Woodford,
October 15, 2014
Most of us talk about our jobs. We tell our family and friends interesting or funny things that have happened in the workplace (=room where we do our job), we describe – and sometimes complain about – our bosses and colleagues and when we meet someone for the first time, we tell

Read More 

life tracking noun

October 20, 2014
the use of one or more devices or apps to monitor health, exercise, how time is spent, etc.

Read More