joy

–noun

1.	the emotion of great delight or happiness caused by something exceptionally good or satisfying; keen pleasure; elation: She felt the joy of seeing her son's success.

2.	a source or cause of keen pleasure or delight; something or someone greatly valued or appreciated: Her prose style is a pure joy.

3.	the expression or display of glad feeling; festive gaiety.

4.	a state of happiness or felicity.

–verb (used without object)

5.	to feel joy; be glad; rejoice.

–verb (used with object)

6.	Obsolete. to gladden.

Synonyms:
1. rapture. 2. bliss.

Antonyms:
1. misery, unhappiness, sorrow, grief.