Mark 8:38

The Greek τῇ μοιχαλίδι consists of the definite article τῇ (the dative singular form of "the") and μοιχαλίδι, which is a diminutive form of μοιχαλίς (meaning "adulteress").

μοιχαλίδι: The diminutive form of μοιχαλίς, meaning "adulteress". The diminutive ending -ιδι conveys a sense of smallness, perhaps affection, or sometimes slight pejorative emphasis, depending on context.

τῇ μοιχαλίδι = "to the adulteress" or "to the little adulteress" (with a diminutive nuance).