diminished - adjective

• (of an organ or body part) diminished in size or strength as a result of disease or injury or lack of use
• impaired by diminution
• (of musical intervals) reduction by a semitone of any perfect or minor musical interval
• made to seem smaller or less (especially in worth)

diminished - thesaurus

atrophied   belittled   lessened   small   vitiated   wasted   weakened