What is the meaning of -kin?

Used to form adjectives expressing resemblance or likeness to, similar to -like.

A suffix used to form nouns having qualities of or belonging to a particular kind, class, or sort.

Forming diminutives of nouns.

Alternative form of -gin (“maker, doer”)

though, anyway, still, nonetheless, nevertheless; often not translated at all, used to underline an action

at that (in addition to what has been said; furthermore; moreover)

even (implying extreme example)

Used to form rhetorical questions or questions for which the speaker is seeking to have their opinion confirmed.

Rōmaji transcription of きん

Assimilated form of -gin after the vowels E / İ.

Source: wiktionary.org

See also