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- Indeed upon any theme of the most admired, because simply the most abstruse of the boasted erudition of the academy, have I ever found Ligeia at fault?1 — Ligeia (29% in)
- They have fallen into the gross but common error of confounding the unusual with the abstruse.4 — The Murders in the Rue Morgue (50% in)
There are no more uses of "abstruse" in Selected Tales by Poe.
Typical Usage (best examples)