The phrase "wert composed of" implies that something is made up of various parts or components. Antonyms, or words with opposite meanings, could include "unstructured," "unorganized," or "chaotic." These words suggest that something lacks order or definition, and may be haphazardly assembled. Alternatively, one could use the term "disintegrated" to suggest that something has fallen apart or lost its coherence. Other antonyms to "wert composed of" might include words like "fragmented," "dismantled," or "disassembled," all of which suggest that the elements that once made up a whole have now been separated or undone.