vitiated vs diminished

vitiated and diminished both are adjectives.

Word	Noun	Adjective	Verb	Adverb
vitiated	No	Yes	No	No
diminished	No	Yes	No	No

As adjectives, vitiated and diminished are synonyms defined as:

Other synonyms of vitiated include lessened, weakened.

vitiated (adjective)	diminished (adjective)
ruined in character or quality	(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	impaired by diminution
	made to seem smaller or less (especially in worth)
	(of musical intervals) reduction by a semitone of any perfect or minor musical interval