This is the 10th most frequent Persian word.
خود
"خود" means "self" or "oneself" in English.
The word "خود" is used as a reflexive pronoun referring back to the subject of the sentence.
او از خود راضی است.
He is satisfied with himself.
The word "خود" is used possessively to relate the object 'future' to the subject 'we'.
ما به آینده خود امیدواریم.
We are hopeful about our future.
The word "خود" is used for emphasis to denote that the subject of the sentence performed the action without help.