This is the 6754th most frequent Swedish word.
ninnie
The Swedish word "ninnie" does not exist in standard Swedish. It may be a name or a misspelling.
In this context, 'Ninnie' is a proper noun used as a name.
Ninnie tycker om att läsa böcker.
Ninnie likes to read books.
In this sentence, 'Ninnies' is the possessive form of the name 'Ninnie', indicating ownership.
Har du sett Ninnies nya klänning?
Have you seen Ninnie's new dress?
Here, 'Ninnie' again is a proper noun referring to a person.