the.com/touchiness

means A tendency to be oversensitive and quick to take offense, reacting to slights that may not even have been intended.

from From 'touchy,' which emerged in the 1600s, likely an alteration of 'tetchy' (irritable, peevish), itself traced to an old word 'tetch' meaning a habit or trick of temperament. The 'touch' spelling pulled it toward the literal sense of being easily touched or set off, as if the person had a hair-trigger nerve exposed to the air. Add '-iness' and you get the standing condition — not one touchy moment, but a whole personality built on them.