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has been decomposing

  • present perfect progressive
    of decompose (3rd person singular).
    decompose
    verb (used with object)
    to separate or resolve into constituent parts or elements; disintegrate.

Example Sentences

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As rapid warming in the region has caused more of the topmost frozen layer to thaw, organic matter has been decomposing and emitting carbon dioxide and methane.

From New York Times ● Apr. 11, 2022

"No, madam, but I hear he has been decomposing for some time!"

From Ever Heard This? Over Three Hundred Good Stories by F. W. Chambers