Learn Farsi: گرسنه نیستی؟ نه، گرسنه نیستم.

The final letter is a He (ه), but at the end of many Farsi words it acts as a vowel instead of a consonant, making an e or eh sound. Also, in casual speech, you will often hear Iranians pronounce گرسنه as goshneh instead of the formal gorosneh.

Why are there no Farsi words for you or I in this sentence?

Farsi often drops subject pronouns like تو (you) and من (I) because the verb endings already tell you who is doing the action. The ending on نیستی means you are, and the ending on نیستم means I am.

How do we make the verb to be negative in Farsi, as seen in نیستی and نیستم?

For most verbs, you make them negative by simply adding a نـ prefix. But the verb to be is a special exception. To say am not or are not, you use the special negative base نیست (nist) and attach the standard personal endings to it. So, نیست plus the I ending becomes نیستم.

If I wanted to contradict the question and say yes, I actually am hungry, would I answer with بله?

No, you would use the word چرا (chera). While چرا normally means why, it is also the special word used to say yes in response to a negative question. To contradict them, you would say چرا، گرسنه هستم (On the contrary, I am hungry).