Adj.
1. (of a
performance) very intensely fah-bulous, usually impromptu, solo piece
Even though it deviates from the planned
performance, neither the fellow performers nor the audience/viewers object, because it enhances the original performance.
2. incredibly good, unbelievably good, defies
expectations with how fabulous it is, utterly fah-bulous
Christine: That guitar sesh in the outro was foilissimo!
M: Oh you mean how he went off-script when he started jamming with his guitar but it only made the
performance more
incredible?
Christine: Yes! And also how utterly fah-bulous the actual jam was!
Dona: Foilissimo indeed!