mirthful in WordNet English dictionary

1. arousing or provoking laughter
   "an amusing film with a steady stream of pranks and pratfalls"; "an amusing fellow"; "a comic hat"; "a comical look of surprise"; "funny stories that made everybody laugh"; "a very funny writer"; "it would have been laughable if it hadn't hurt so much"; "a mirthful experience"; "risible courtroom antics"
   amusing  comic  comical  funny  laughable  mirthful  risible 
   
2. 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"
   gay  jocund  jolly  jovial  merry  mirthful