Definition of nicey in English:

nicey

Pronunciation /ˈnʌɪsi/

adjective

(also nicy)
informal
  • Nice. Also reduplicated for emphasis, as "nicey-nicey" adjective also nicey-nice.

noun

(also nicy)
informal
  • A nice person or thing; a treat.

Origin

Mid 19th century; earliest use found in Anthony Trollope (1815–1882), novelist. From nice + -y.