Parangariqutirimiquaro. This is an example of such a word, and it is a real place in Mexico.
I dont think there is a word for words that are fun to say. Perhaps we should make one up!
___________
What comes to mind is something like "lilting words". Words that lilt. Lilt is usually a pleasing cadence, or rhythm in speech that also includes variety in spoken pitch. Usually the word refers to language in general, or to a melody. Why not apply it to certain words?
Linoleum
Appendectomy
Onomatopoeia
Jejune
While it is not technically a single word, this may be the grand daddy of all 'lilting' references:
THE BOY FROM TACAREMBO LA TUMBE DEL FUEGO SANTA MALIPAS ZATATECAS LA JUNTA DEL SOL Y CRUZ. From a song by Mary Rodgers and Stephen Sondheim, a take-off on Jobim's Girl from Ipanema.
exciting interesting
mock, make fun of, say boo, jeer is no good word.
Crackle is fun to say. Are you guys dum or what?
social gatherings, fun, riots, receptions, get-together, entertainment...
The word 'fun' is a noun, a common, abstract, uncountable noun; a word for a concept.The word 'fun' is used informally as an adjective, a word to describe a noun (fun activities). The forms for the use of fun as an adjective are fun, more fun, most fun.
The word for fun is "tanoshii". (It is an adjective.)
Willow, Its not reaaly a `FUN` word but it rhymes.
The word 'good' in the phrase 'good fun' is an adjective describing the noun 'fun'.
Translation: did you have fun
Fun
You may say 'tanoshii.'
exciting interesting
cause its fun to say
Some longer words that are synonyms for the noun fun are amusement, enjoyment, or entertainment.
"Pun" is pronounced as "puhn," rhyming with the word "fun."
mock, make fun of, say boo, jeer is no good word.
You may say 'tanoshii.'