His undignified behavior at the party embarrassed his friends.
She considered his undignified act of throwing a tantrum in public to be unacceptable.
Finding herself in such an undignified situation, she quickly tried to regain her composure.
Her undignified appearance in torn jeans and a dirty t-shirt was not appropriate for the formal event.
He spoke in an undignified manner, using slang and profanity in front of his elders.