Greek aporia < aporos, impassable: a (without) + poros (passage)
aporia (plural: aporiae)
#a figure of speech in which the speaker pauses rhetorically to express uncertainty or doubt as to how to proceed: How can I describe the beauty of the desert?.
#An insoluble contradiction in a text's meaning.
#Any kind of logical impasse suggested by a text or speaker.
impasse, paradox, contradiction