belittled vs diminished

belittled and diminished both are adjectives.

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

As adjectives, belittled and diminished are synonyms defined as:

belittled and diminished: made to seem smaller or less (especially in worth)

Other synonyms of belittled include small.

belittled (adjective)	diminished (adjective)
made to seem smaller or less (especially in worth)	(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
	made to seem smaller or less (especially in worth)
	(of musical intervals) reduction by a semitone of any perfect or minor musical interval