happy
Americanadjective
-
delighted, pleased, or glad, as over a particular thing.
I'm so happy to see you!
- Antonyms:
- sad
-
characterized by or indicative of pleasure, contentment, or joy.
a happy mood;
a happy frame of mind.
-
willing to be helpful, as with assistance, a contribution, or participation.
We’ll be happy to bring a couple of salads to the party.
-
favored by fortune; fortunate or lucky.
Our home country is a happy, fruitful land.
- Synonyms:
- prosperous, successful, propitious, favorable
-
(used as part of an expression of good wishes on a special occasion).
Happy Valentine’s Day to my husband.
Happy Birthday, Grandpa!
-
apt or felicitous, as actions, utterances, or ideas.
Their collaboration was a happy accident.
- Synonyms:
- pertinent, opportune, fitting, appropriate
-
obsessed by or quick to use the item indicated (usually used in combination).
He was a trigger-happy gangster.
Everybody is gadget-happy these days.
idioms
adjective
-
feeling, showing, or expressing joy; pleased
-
willing
I'd be happy to show you around
-
causing joy or gladness
-
fortunate; lucky
the happy position of not having to work
-
aptly expressed; appropriate
a happy turn of phrase
-
informal (postpositive) slightly intoxicated
interjection
combining form
Usage
What is a basic definition of happy? Happy describes a feeling of joy, delight, or glee. It also describes something that is related to or shows joy. Happy can describe someone being willing to do something or be helpful. Happy is used in many expressions that wish good tidings to another person. Happy has a few other senses as an adjective. Happy describes feeling really good, as when a person in a good mood that makes them smile. Happiness refers to this positive emotion. Happily means in a happy way. Real-life examples: Everybody has something that makes them happy. Cute animals, presents, compliments, and loved ones make most people feel happy. Used in a sentence: The surprise birthday party really made Abdul happy. Happy also describes something that shows or is related to feelings of happiness and joy. Used in a sentence: The friendly clown had a happy smile. Happy describes someone being willing to do something, especially to help or assist someone else. They don’t think whatever they will do is a problem or a chore. Real-life examples: Many experts are happy to show off their knowledge. Salespeople are often happy to explain things to customers if it means selling more items. Used in a sentence: I’d be happy to give you a ride to the mall since I was going there anyway. The word happy is used in many greetings and expressions that wish a person well or wish that they have a good future. Used in a sentence: Happy birthday!
Other Word Forms
Derived Forms
Inflected Forms
Adjectives
Etymology
Origin of happy
First recorded in 1350–1400; from Middle English; see origin at hap 1 ( def. ), -y 1 ( def. )
Explanation
Happy is a feeling of joy, pleasure, or good fortune — exactly how you'd feel if you learned that you won the lottery or got accepted into your number one choice of colleges. Happy hails from the Middle English word hap, meaning "good luck." Many of the early European words for happy actually referred to good luck, rather than a feeling of joy. On its own, happy means an enjoyable or satisfied state of being. When hyphenated, it can refer to an overwhelming inclination to do something. Someone who is trigger-happy, for example, has an overwhelming urge to shoot things, while a clothes-happy person is obsessed with taking trips to the mall.
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.
See Examples For:
“My initial reaction was, I was happy to be back in the team,” Balogun said Tuesday on “CBS Mornings.”
From Los Angeles Times ● Jul. 14, 2026
Hamish, the Tartan Army organiser, spent a happy week in the United States last month, where he says Scots became "more popular than Taylor Swift".
From BBC ● Jul. 14, 2026
That means Netflix has to keep its subscribers happy, which could take away from its ability to keep raising subscription rates going forward.
From MarketWatch ● Jul. 14, 2026
“I’m happy for us,” she said, “Not just us as Muslims. He is the right fit for New Jersey.”
From Slate ● Jul. 14, 2026
In front of me was the Betsie of Haarlem, happy and at peace.
From "The Hiding Place" by Corrie ten Boom
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Gasped Dr. Cook: "Thanks -happy," sank back into a coma.
From Time Magazine Archive
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Research generally supports the idea that happy employees stay longer and lead to happier customers.
From The Wall Street Journal ● Jul. 8, 2026
"Six adults skipped to work, happier than ever as our dream of a World Cup win continues", he added.
From BBC ● Jul. 6, 2026
Here in La Guaira, which in happier times is a beach resort for people making a day trip from Caracas, the air now stinks of death.
From Barron's ● Jun. 28, 2026
In fact, new research suggests they might be happier and more successful if they go back to the office.
From MarketWatch ● Jun. 27, 2026
“Me too,” I say, much happier with my new version of Blancaflor.
From "The Last Cuentista" by Donna Barba Higuera
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“The happiest workers can engender similar emotions in their customers, but they are also better at their jobs,” said the report.
From The Wall Street Journal ● Jul. 8, 2026
As her mother explained, B.P.J. “is the happiest I have ever seen her when she is accepted for who she is and able to participate in school sports.”
From Slate ● Jun. 30, 2026
Hockney would remember this period as one of his most prolific and happiest times in California.
From Los Angeles Times ● Jun. 12, 2026
"I'm happiest when I'm painting," he told the Telegraph.
From Barron's ● Jun. 12, 2026
It was the happiest part of my day, to be truthful.
From "Auggie & Me" by R. J. Palacio
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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.