Uncomplimentary (adjective)

Not giving praise or expressing approval; critical or negative.

Origin:

From un- (not) + complimentary (giving praise or expressing approval).

Examples:

1. He made several uncomplimentary remarks about her cooking.
2. She received many uncomplimentary comments about her new haircut.
3. The critics had uncomplimentary things to say about the new play.
4. The boss had an uncomplimentary view of his work.
5. She had an uncomplimentary attitude towards his proposal.