What is the meaning of Niin?

first-person singular pronoun: I, me

so (in that way)

Used to join two verbal phrases in a causal relation: therefore, then

first-person singular pronoun: I, me

so, then, in that case

so, to this or that extent

like that, in that way, so (in a way that the speaker does not directly show)

very (to a great extent; especially when used emphatically or when talking about how one feels)

Used to stress a contradicting element in a sentence. No unambiguous translation into English.

then; used to introduce the main clause after an auxiliary clause

In the structure niin ... kuin ...: ... as well as ...

yes, yeah (especially when asked to confirm something)

right (either indicating agreement or having no opinion)

Rōmaji transcription of にいん

Source: wiktionary.org

See also