Pains of love be sweeter far / Than all other pleasures are.

For instance, "delight" is the opposite of "sorrow."

Great was the delight of his parents.

The joys of parents are secret, and so are their grief's and fears.

Every cloud has a silver lining.

Her eyes shone with joy when she saw that her mother was not mad at her.

A thing of beauty is a joy forever.

A smile may convey understanding, joy, or an appreciation of humor.

Pools of sorrow, wave of joy.

They bubbled over with joy.

She fairly jumped for joy.

Her heart was filled with joy.

She is beside herself with joy.

She began to derive further pleasure from listening to music.

She burst out crying with joy when she heard the news.

Her unhappiness turned to bliss when she heard his voice.

Her smile expressed joy.

Her heart bounded with joy.

Her heart was full of joy.

So great was her joy that she shed tears.