The adj merry has 3 senses (first 2 from tagged texts)
1. (4) gay, jocund, jolly, jovial, merry, mirthful -- (full of or showing high-spirited merriment; "when hearts were young and gay"; "a poet could not but be gay, in such a jocund company"- Wordsworth; "the jolly crowd at the reunion"; "jolly old Saint Nick"; "a jovial old gentleman"; "have a merry Christmas"; "peals of merry laughter"; "a mirthful laugh")
2. (1) gay, festal, festive, merry -- (offering fun and gaiety; "a festive (or festal) occasion"; "gay and exciting night life"; "a merry evening")
3. brisk, lively, merry, rattling, snappy, spanking, zippy -- (quick and energetic; "a brisk walk in the park"; "a lively gait"; "a merry chase"; "traveling at a rattling rate"; "a snappy pace"; "a spanking breeze")