peevishness
peev-ish-ness
noun
The quality of being easily annoyed, irritable, or bad-tempered, often over trivial matters.
"Her peevishness was evident after a long, stressful day."
Thesaurus
Synonyms: snappishness, surliness, biliousness, temper, irritability, pettishness, fussiness, fretfulness, choler, crossness, petulance