simple past tense and past participle of diminish
"After the storm, the once-mighty oak tree was diminished to a splintered stump."
impaired by diminution
"The constant noise from the construction site has diminished my ability to concentrate on my work."
(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"
(of musical intervals) reduction by a semitone of any perfect or minor musical interval
"a diminished fifth"
made to seem smaller or less (especially in worth)
"her comments made me feel small"
lessened, reduced
"The team's enthusiasm diminished after they realized the project was running over budget."