'Mirth' in the Bible

I said in my heart, "Come now, I will test you with mirth: therefore enjoy pleasure;" and behold, this also was vanity.

I said of laughter, "It is foolishness;" and of mirth, "What does it accomplish?"

The heart of the wise is in the house of mourning; but the heart of fools is in the house of mirth.

Then I commended mirth, because a man has no better thing under the sun, than to eat, and to drink, and to be joyful: for that will accompany him in his labor all the days of his life which God has given him under the sun.