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Synonyms

hey

American  
[hey] / heɪ /

interjection

  1. (used as an exclamation to call attention or to express pleasure, surprise, bewilderment, etc.)

  2. Informal. hello: used as a greeting.

hey British  
/ heɪ /

interjection

  1. an expression indicating surprise, dismay, discovery, etc, or calling for another's attention

  2. an exclamation used for emphasis at the end of a statement, or alone to seek repetition or confirmation of another person's statement

  3. an exclamation used by conjurors to herald the climax of a trick

"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

Etymology

Origin of hey

1150–1200; Middle English hei

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 hey, did you know that the word “raptor”—which is often used to describe birds of prey—comes from the Latin verb rapio, which means to plunder, rob, ravish, or abduct?

From Slate • Feb. 21, 2026

“We were reminded, hey, we own a lot of U.S. assets,” he said.

From The Wall Street Journal • Feb. 13, 2026

But as the credits roll, a brand new song plays and, hey, it's pretty good.

From BBC • Jan. 27, 2026

"These conditions, it's not great throwing the football. But hey, we do what we need to do... We're off to the Super Bowl. Let's go!"

From Barron's • Jan. 26, 2026

“So, hey, how do you know Maria Martinez?”

From "Two Degrees" by Alan Gratz

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.