-y; forms adjectives from nouns and verbs · -ed (when attached to a compound of an adjective and a noun or verb it describes)
köken: From earlier -ig, -og, from Middle Low German -ich and Old Swedish -ogher, from Old Norse -agr, -ugr, -igr, from Proto-Germanic *-gaz, from Proto-Indo-European *-kos. Cognate with Old English -ig, whence English -y. Compare -og, avog, avig and -ot.
is (“ice”) + -ig → isig (“icy”)
kunna (“be able to, know”) + -ig → kunnig (“knowledgeable”)
Forms the present active participle of a verb, which is normally used like an adjective. The English equivalent is normally -ing, but sometimes also -ish. · Forms an adjective from a noun.
köken: From Proto-Finnic *-pa, from Proto-Uralic *-pa. In the participial sense, the Finnish form descends from the weak-grade variant *-ba, which was eventually extended by analogy to all verbs. The original strong grade remains as -pa in a few words (e.g. syöpä, käypä, kaikkivoipa), but these have lost their verbal meaning. The adjective ending has also been generalized to its weak form (*-ba) through…
kirjoittaa (“to write”) + -va → kirjoittava (“writing, that writes”)