Rugous is a relatively uncommon word that is used to describe a rough, wrinkled or ridged surface. There are several other words that could be considered synonyms for rugous, including: uneven, craggy, crinkled, corrugated, rough, textured, bumpy, irregular, pitted, or gnarled. Depending on context, other synonyms may include: creased, furrowed, scrunched, uneven, contoured, or weathered. While not always interchangeable, these words often describe a similar type of surface or texture, and could be used in place of rugous to convey a similar meaning. As with any word choice, the context and intended meaning should be considered when selecting synonyms.