The word "more reverberated" implies an increase in the intensity or extent of sound waves bouncing off a surface. Therefore, antonyms for this term would describe a decrease in these qualities. Words such as quiet, hushed, muffled, and dulled might be appropriate. For example, if a sound were to be less reverberated, it would suggest that it was muted, dampened, or absorbed. Similarly, if the reverberation were to be reduced, one might hear the sound more clearly or accurately. In short, antonyms for "more reverberated" describe a situation in which sound waves are not bouncing off surfaces as much, resulting in a reduced volume, intensity, or echo.