Adjective: pettish pe-tish- Easily irritated or annoyed
"an incorrigibly pettish young man";
- cranky [informal], fractious, irritable, nettlesome, peevish, peckish [N. Amer, informal], petulant, scratchy, testy, tetchy, techy, pouty, narky [Brit, slang]
See also: ill-natured