Forgive the beginners question, but what does the Greek letters that come after Greek words in lexicons and other sources indicate? e.g. ἀδελφή -ῆς, ἡ

What does -ῆς, ἡ indicate?

Thanks
Alan

Hi Alan, It seems that you've never had lessons systematically. It is usual, in dictionaries or in classroom, to explain a noun by giving the main (nominative) case, the genitive case, and the gender. In your example, ἀδελφή, is the nominative case ("the sister"); -ῆς, is the ending of the genitive case (ἀδελφῆς = "of the sister", etc.); and finally the feminine article "ἡ" shows that the noun is feminine.