It's pronounced like "nyet" with a short, sharp "e" sound at the end.
Here are some other ways to say "no" in Russian, depending on the context:
* "не" (ne) - This means "not" and is used before a verb or adjective to negate it. For example, "Я не хочу есть" (Ya ne khochu est') means "I don't want to eat."
* "ничего" (nichego) - This means "nothing" and can be used to express a lack of something or to decline an offer. For example, "Спасибо, ничего не нужно" (Spasibo, nichego ne nuzhno) means "Thank you, I don't need anything."
* "отрицательно" (otritsatel'no) - This is a more formal way to say "no" and is often used in official settings. For example, "Ответ отрицательный" (Otvet otritsatel'nyy) means "The answer is negative."
Remember that the specific context will determine which word or phrase is most appropriate.