Out of sorts

• Somewhat sore
• In an irritable mood
• Offended (informal)
• Bummed out
• Somewhat upset
• Put out
• Ticked off

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1824, past participle adjective from miff (v.). Sir Walter Scott calls it "a women's phrase."

Wiktionary Word definitions in Wiktionary
(context informal English) irritated, angry, put out or annoyed. v (en-past of: miff )

Wikipedia Word definitions in Wikipedia