[{"Bold_text": "adjective", "List Items": ["not mentionable; inappropriate, unfit, or improper for mention, as in polite conversation; unspeakable."]}, {"Bold_text": "noun", "List Items": ["something that is not to be mentioned:That subject was classed among the unmentionables.", "unmentionables, undergarments .(formerly) trousers or breeches.", "undergarments .", "(formerly) trousers or breeches."]}]