"Low-leveled" can be replaced with various synonyms that convey a similar meaning, such as "basic," "elementary," "fundamental," "primitive," "rudimentary," or "simple." Each of these words has a different connotation and can be used in different contexts, but they all suggest something that is basic or foundational. For instance, a low-leveled computer game might be described as simple or primitive, while a low-leveled employee might be considered basic or rudimentary in their skills. Whatever the context, using synonyms can add variety and nuance to one's writing and speech while still conveying the intended message effectively.