1 : to make less or cause to appear less diminish an army's strength His role in the company was diminished. 2 : to lessen the authority, dignity, or reputation of : belittle diminish a rival's accomplishments.

Does diminish mean decrease?

to lessen; decrease.

What does it mean to diminish a person?

If you diminish someone or something, you talk about them or treat them in a way that makes them appear less important than they really are. He never put her down or diminished her.