oh

Noun

oh noun

1. An utterance of oh; a spoken expression of surprise, acknowledgement, etc.

oh noun

1. The letter O, o (more commonly spelled o)

oh noun

1. The digit 0 (especially in representations of speech)“My telephone number is four-double-three-two-oh-nine.”

Verb

oh verb

1. To utter the interjection oh; to express surprise, etc.

Interjection

oh interjection

1. Expression of surprise.“Oh! I didn't see you there.”
2. Expression of wonder, amazement, or awe.“Oh, wow! That's amazing.”
3. Expression of understanding, affirmation, recognition, or realization.“Oh, so that's how it works.”
4. A word to precede an offhand or annoyed remark.“Oh, leave me alone.”