suurillekin
Suurillekin is a Finnish morphological form formed from the adjective suur- meaning “big,” the allative plural suffix -ille meaning “to/for,” and the enclitic particle -kin meaning “also” or “even.” The combination conveys the sense of including a larger or more prominent group, literally “to the big ones as well” or “even the big ones.” It is a single word in standard Finnish spelling and is produced by attaching -ille to the plural allative form suurille and then adding the -kin particle.
Grammatically, suurillekin demonstrates how the -kin particle can attach to a word that already bears a case
Usage and examples help illustrate the nuance. Examples include: Tuki tarjottiin suurillekin yrityksille. (Support was offered
See also: Finnish grammar, the -kin particle, and the allative case.