Save Gender Feminine Usage English (Rare) Pronounced Pron. KOH-ZEE [key] Other Forms FormsCosy Meaning & History Meaning "comfortable". A snug word name that may appeal to hygge-minded parents. It reappeared on the US charts in both 2020 and 2022 after a gap of 55 years. It can be short for "Cosima" or "Cosette/Cozette".