"Merry-andrew" is a rather antiquated term that refers to a clownish or buffoonish character. There are several synonyms for this word, including 'harlequin', 'jester', 'fool', 'clown', 'buffoon', and 'trickster'. Each of these words carries slightly different connotations, but all suggest a character who is funny or amusing in a silly or ridiculous way. Some of these words have evolved into new contexts- 'clown' and 'jester', for example, are now used more generally to refer to someone who is silly or foolish, rather than a specific character type. Nevertheless, all of these words can help to describe a boisterous and entertaining character who doesn't take themselves too seriously.