-iškas

Etymology
Ultimately from ; cognate with 🇨🇬, 🇨🇬, and also with Proto-Slavic and Proto-Germanic  (🇨🇬, 🇨🇬, 🇨🇬, etc.).

Suffix

 * 1) A suffix that generally forms adjectives from nouns: -ish, -ic, -like, -ly