べきではない

べきではない expresses that something is not appropriate or not advisable to do. It conveys a normative judgment or strong recommendation against a course of action, often implying that it would be better not to do it. It is stronger and more prescriptive than simply saying you don’t want to do something, and it is commonly used for rules, advice, or criticisms about behavior. Typical contexts include everyday decisions, etiquette, safety, and social norms. Note that with な-adjectives and nouns you typically use べきではない after 〜の or after である/であるべきではない forms, as in 〜であるべきではない or 〜のべきではない. Examples below illustrate common patterns and usages.