Acerbity

An epigram is a short, sharp saying in prose or verse, frequently characterized by acidity or acerbity and sometimes by wisdom.

acerbity of temper, of language, of pain

“Well ?” I repeated with some acerbity. I had been wondering for the last ten minutes how many more knots he would manage to make in that same bit of string before he actually started undoing them again.

[…] the recollection of that yesterday […] made him bear with the meekness and patience of a true-hearted man all the worrying little acerbities of to-day;

This opera was mainly in the style of late Puccini, with acerbities stolen from Stravinsky.