merry as the day is long

merry as the day is long

old-fashioned Jubilant; especially carefree, lively, and full of fun. Tom is playing outside, merry as the day is long. Though he acts as merry as the day is long, he is dreadfully unhappy when he is all alone.
See also: long, merry
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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