Undignified (adjective)

Not having or showing the qualities or characteristics regarded as dignified or appropriate to one's position or status.

Origin:

Late 16th century: from un- (expressing negation) + dignified, from latin dignus "worthy".

Examples:

1. His behavior at the party was undignified and shameful.
2. She found it undignified to argue in public.
3. His antics on stage were undignified and embarrassing.
4. The way he talked to her was undignified and disrespectful.
5. The proposal was undignified and a breach of protocol.