This is the 84th most frequent Greek word.
όλους
"Όλους" means "everyone" or "all" in English.
The word "όλους" here is used as an indirect object, greeting 'everyone' inclusively.
Καλημέρα σε όλους!
Good morning to everyone!
The word "όλους" is used here as the direct object of the verb "ευχαριστώ" (to thank), referring to 'everyone' being thanked.
Ευχαριστώ όλους για την υποστήριξή τους.
I thank everyone for their support.
Here, "όλους" is the object of the verb "θα περιμένω" (I will wait), indicating the individuals expected to arrive.