Preservation is an important aspect of maintaining the quality and longevity of various entities. However, in certain situations, the opposite of preservation can also be necessary. The antonyms for the word "more preserved" could include "degraded," "rotten," "spoiled," "corrupted," "decayed," "rotted," "ruined," "crumbled," "detoriated," and "worsened." These words indicate that something has lost its original state and has gone bad over time. They are used to describe things that have not been properly taken care of or have been exposed to unfavorable conditions. While preservation is crucial in many situations, sometimes these antonyms are necessary to convey the decay and degradation of different objects or things.