Longman Dictionary of Contemporary English homepage

Date: 1300-1400
Origin: hap 'chance, luck' (13-20 centuries), from Old Norse happ

happy

adjective
     
happy
hap‧py S1 W1 comparative happier, superlative happiest
1 having feelings of pleasure, for example because something good has happened to you or you are very satisfied with your life [≠ sad]:
It's a lovely house and we've been very happy here.
I've never felt happier in my life.
He was a happy child who rarely cried.
the happy faces of the children
I loved her and thought I could make her happy.
happy to do something
John will be so happy to see you.
happy (that)
I'm happy that everything worked out well in the end.
be/feel happy for somebody
What a wonderful opportunity! I'm so happy for you.
happy to be doing something
We're very happy to be taking part.
the happy couple (=a couple that have just got married or will soon get married)
2 [usually before noun] a happy time, relationship, event etc is a good one that makes you feel happy:
This has been the happiest day of my life.
They had a very happy marriage.
I have lots of happy memories of the place.
The story has a happy ending, however.
When's the happy event (=the birth of your child)?
3 [not before noun] satisfied or not worried
happy with
On the whole, I'm happy with the way I look.
People living nearby are not happy with the decision.
happy about
Mom wasn't happy about Tess going off travelling on her own.
I pretended to agree with her, just to keep her happy.
happy doing something
I'm quite happy doing what I'm doing.
4

be happy to do something

to be very willing to do something, especially to help someone:
Our team will be happy to help.
I'd be happy to take you in my car.
5

Happy Birthday/New Year/Christmas etc

used to wish someone happiness on a special occasion:
Happy Birthday, Michael!
Happy Thanksgiving, everyone!
6

many happy returns

used to wish someone happiness on their birthday
7 [only before noun] fortunate or lucky:
By a happy coincidence, James was also in town that weekend.
I'm in the happy position of not having to work.
8

a happy medium (between something and something)

a way of doing something that is not extreme but is somewhere between two possible choices:
I always tried to strike a happy medium between having a home that looked like a bomb had hit it and becoming obsessively tidy.
9 [only before noun] formal suitable:
His choice of words was not a very happy one.
10

a/my/your etc happy place

if you are in or go to your happy place, you imagine you are in a place that makes you feel calm and happy, because it helps you stop thinking about a bad situation
WORD FOCUS: happy WORD FOCUS: happy
cheerful behaving in a way that shows you are happy
in a good mood
happy at a particular time, and therefore friendly to other people
pleased
/glad happy because something good has happened
delighted
/thrilled/overjoyed/ecstatic very happy because something good has happened
contented
happy with your life
optimistic
/positive believing that good things will happen in the future
gleeful
/gloating smug happy because something bad has happened to someone else

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