mer·ry 
(mĕrē)
(mĕrē)adj. mer·ri·er, mer·ri·est
1. Full of cheerfulness, liveliness, and good feelings: merry revelers.
2. Marked by or offering fun, good feelings, and liveliness; festive: a merry evening.
3. Brisk: a merry pace.
4. Archaic Delightful or pleasing.
[Middle English merri, from Old English mirige, pleasant; see mregh-u- in the Appendix of Indo-European roots.]
merri·ly adv.
merri·ness n.