'Mirth' in the Bible

I said in mine heart, Go to now, I will prove thee with mirth, therefore enjoy pleasure: and, behold, this also is vanity.

I said of laughter, It is mad: and of mirth, What doeth it?

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 hath no better thing under the sun, than to eat, and to drink, and to be merry: for that shall abide with him of his labour the days of his life, which God giveth him under the sun.