Form: [adjective] +
兮兮 is a common colloquial pattern that adds a vivid, slightly mocking '-ish/-y' flavor. Other examples:
脏兮兮 'all grimy',
可怜兮兮 'pitiful-looking',
紧张兮兮 'all jittery'. The
兮 itself is a classical particle, and its repetition gives a sing-song colloquial tone.
