Definition of nicey in US English:
nicey
(also nicy)
adjective
informal
Nice. Also reduplicated for emphasis, as "nicey-nicey"adjective also nicey-nice.
noun
informal
A nice person or thing; a treat.
Origin
Mid 19th century; earliest use found in Anthony Trollope (1815–1882), novelist. From nice + -y.
Pronunciation
nicey
/ˈnʌɪsi/