This is the 40th most frequent Greek word.
σας
The Greek word "σας" means "your" (plural or formal) or "you" (plural or formal, as an object).
In this sentence, 'σας' is used as a possessive pronoun, showing ownership of 'υπομονή' (your patience).
Ευχαριστώ για την υπομονή σας.
Thank you for your patience.
Here, 'σας' functions as an object pronoun in the sentence, indicating to whom the action of helping is directed (to you).
Πώς μπορώ να σας βοηθήσω;
How can I help you?
In this usage, 'σας' acts as a direct object pronoun, representing the recipient of what the speaker wants to communicate (to you).