Today a co-worker mentioned the word “euouae”, which are a certain type of hymnal cadence. I thought I knew what this was but I was mistaken. I had it mixed up with “evoe”, which is the frenzied cry of the maenads (from Greek εὐοῖ). I first encountered this word in Zelazny's Doorways in the Sand, of all places. The protagonist is at a bacchanal party, also attended by the requisite donkey, and:
The girl does not appear again, but the donkey is a plot point. If there is a canonical name for Silenus’ donkey, I do not know it.
Similar but not related is “ululation”, which is just what it sounds like, a long wavering howl. This onomotopoeic word is very old. It is not, however, related to uvula, which is Latin for “little grape”.
To me “ululate” suggests that there ought also to be “ululatrix” and perhaps also “ululatorium”. If I wrote a novel it would be full of this sort of nonsense.