"Cut it" is a popular phrase used to express displeasure or disappointment with someone or something. However, there are many synonyms that can be used to convey a similar sentiment. For example, you could say "stop it," "knock it off," or "quit it." If you want to use more expressive language, you could say "cease and desist," "halt," or "put an end to it." Alternatively, you could use a more playful tone with phrases like "enough already," "basta," or "cool it." Whatever your speaking style, there are plenty of synonyms to communicate your frustration in a pinch.