The word "nono's" is an informal way of saying "no" or "not happening." There are several synonyms for this phrase, including "no way," "not a chance," "forget it," "absolutely not," and "not on your life." These phrases all convey a sense of rejection or refusal, and they are often used in response to requests or proposals that are considered unreasonable or undesirable. Whether you are trying to politely decline an offer or firmly assert your boundaries, there are plenty of alternatives to the word "nono's" that can help you express yourself more effectively.