"atrophied" in the verb sense
"Muscles that are not used will atrophy"
"atrophied" in the adjective sense
1. atrophied, wasted, diminished
of an organ or body part) diminished in size or strength as a result of disease or injury or lack of use
"partial paralysis resulted in an atrophied left arm"
Source: WordNet® (An amazing lexical database of English)
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