How to use "unimportant" in a sentence

'You mean, unimportant, Sir,' said the White Rabbit

'Important - unimportant - important - unimportant,' he repeated.

'My hair will grow again,' she thought, 'but teeth would be gone forever.' But then she thought about her daughter, and her own appearance suddenly seemed unimportant

But robbery is unimportant compared with murder.'

A final difference seems very unimportant

Why should he? People are unimportant