Rockiness refers to the uneven or rough texture of a surface. It describes the degree to which a surface is covered with rocks or is composed of rocky material. There are a variety of synonyms one can use in place of "rockiness" to convey similar meaning and context. For instance, terms like "rocky terrain," "rock-strewn," "boulder-studded," "rock-girt," "rock-ribbed," or "rock-littered" can be used alternatively. Other synonyms include "rugged," "uneven," "jagged," "craggy," "uneven," "rough," "mountainous," and "rock-bound." Each word has unique connotations and can be used depending on the context and tone of the text.