Where does “*ćármištʰas” come from?

*ćármištʰas (Proto-Indo-Iranian) comes from Proto-Indo-Iranian -ištʰas, from Proto-Indo-European -istHos, from Proto-Indo-European -yōs, from Proto-Indo-European -yoss.

Ancestry of “*ćármištʰas”, step by step

StepLanguageWordMeaning
1Proto-Indo-Iranian-ištʰassuperlative adjectival suffix
2Proto-Indo-European-istHos—
3Proto-Indo-European-yōsForms adjectives from roots, meaning "very" or...
4Proto-Indo-European-yoss—
Every word from Proto-Indo-European -yoss →Every word from Proto-Indo-Iranian -ištʰas →Every word from Proto-Indo-European -yōs →