Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

Merry

Merry as a haystack sleeper.
—Anonymous

Merry as a two-year-old.
—Anonymous

Merry as cap and can.
—Anonymous

Merry as crickets in an oven.
—Anonymous

Merry as flowers in May.
—Anonymous

Merry as mice in malt.
—Anonymous

Merry as spring.
—Anonymous

Merry as the maids.
—John Bunyan

Merry as a kitten.
—Robert Burns

Merry as a marriage bell.
—Lord Byron

As merry as a fiddler.
—The Christmas Prince

Merry as the month of May.
—Barry Cornwall

Merry as popinjay.
—Michael Drayton

Merry as birds on the bough.
—Frederick the Great

As merry as king in his delight.
—Robert Greene

Merry as an alimony bell.
—O. Henry

As merry as a pie.
—King’s Halfe-penny-worth of Wit in a Penny-worth of Paper

Merry as larks.
—Walter Savage Landor

Merry as spring groves full of birds.
—Gerald Massey

Merry as it were June.
—Dinah Maria Mulock

Merry as singing birds.
—Charles Eliot Norton

Merry as three beans in a blue bladder.
—Poor Robin’s Almanack

As merry as a grig.
—English Proverb

As merry as the maltman.
—Scottish Proverb

Merry as the day is long.
—William Shakespeare

As merry, as when our nuptial day was done,
And tapers burned to bedward.
—William Shakespeare

Merry as crickets.
—William Shakespeare

Merry as an ape.
—Jonathan Swift