Meaning of “patent” - Learner’s Dictionary

patent

adjective uk us /ˈpeɪtənt, ˈpætənt/ formal
patent lie/nonsense

something that is obviously false:

The explanation he gave - that was patent nonsense.
patently adverb formal

Her claims are patently (= obviously) false.

(Definition of “patent adjective” from the Cambridge Learner’s Dictionary © Cambridge University Press)