aporia

from The Collaborative International Dictionary of English v.0.48
Aporia \A*po"ri*a\, n.; pl. {Aporias}. [L., doubt, Gr. ?, fr. ?
   without passage, at a loss; 'a priv. + ? passage.] (Rhet.)
   A figure in which the speaker professes to be at a loss what
   course to pursue, where to begin to end, what to say, etc.
   [1913 Webster]
    

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