Was heißt »Glücklichkeit« auf Englisch?

Das Substantiv »Glücklichkeit« lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Englische Beispielsätze

Neither joy nor sorrow lasts for ever.
She is the joy of the whole family.
My daughter gives me so much joy.
Crying is a very close neighbor to joy.
It is difficult for those who are sad to feign joy.
Moments of happiness know neither future nor past.
When life is a joy, then life has meaning.
Nine-tenths of our happiness depends on our health.
Our children's happiness is our happiness.
His face was beaming with joy.
It's a joy to be able to listen to Chopin while I work.
He envied them their happiness.
I found happiness in Duong.
We're all looking for happiness.
"Yay, yay, we're going to the zoo!" Tom shouted as he jumped with joy.
Mary hardly ever does what she wants, instead doing mostly what she thinks others want. She makes her own happiness too dependent on their approval.
The weather forecast is no cause for joy.
All happiness is based only on the relationship between what we hope to get and what we get.
That was a joy to watch.
His heart leaped with joy.