I am with you. I disagree with 4oYBixt0. To explain to her, out of context "worst" is a pretty useless noun phrase. Of course modern grammarians may have changed the terminology. But consider is either transitive or not. And if transitive, it must have an object. And that object will be a noun phrase. Which requires a noun . And "worst" is an adjective. Nor can "the worst" be an adverb, which is the only way it could qualify an intransitive verb.