The word "chagga" has a few synonyms, which come in handy when you're looking for alternative expressions. One possible substitution for "chagga" is "jagged." Both words convey a sense of roughness or unevenness. Similarly, "bumpy" could also be used as a synonym since it implies a surface that has minor irregularities or interruptions. Another possible alternative to "chagga" is "crumbly," which describes a substance that breaks or falls apart easily. Finally, "uneven" and "rough" are additional synonyms that are closer in meaning to "chagga." Ultimately, depending on the context and intended meaning, any of these words could be a suitable replacement for "chagga".