Other contronyms are a form of polysemy, but where a single word acquires different and ultimately opposite definitions. For example, "sanction"—"permit" or "penalize"; "bolt" (originally from crossbows)—"leave quickly" or "fix/immobilize"; "fast"—"moving rapidly" or "unmoving". Some English examples result from nouns being verbed in the patterns of "add <noun> to" and "remove <noun> from"; e.g. "dust", "seed", "stone". Denotations and connotations can drift or branch over centuries. An apocryphal story relates how Charles II (or sometimes Queen Anne) described St Paul's Cathedral (using contemporaneous English) as "awful, pompous, and artificial," with the meaning (rendered in modern English) of "awe-inspiring, majestic, and ingeniously designed". Negative words such as "bad" and "sick" sometimes acquire ironic senses referring to traits that are impressive and admired, if not necessarily positive ("that outfit is bad as hell"; "lyrics full of sick burns").