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perperacute

ˌperperaˈcute, a. Obs.
  [f. per- 4 + peracute (which already contains the same prefix).]
  Intensely or excessively acute.

1647 Ward Simp. Cobler 23 To still the sad unquietnesse and per-peracute contentions of that most comfortable and renowned island. 1661 Lovell Hist. Anim. & Min. 438 If simply acute they may be judged on the fourteenth day: If peracute on the seventh; if perperacute on the fourth. 1665 Harvey Advice agst. Plague 10 Per-per-acute malign Feaver. 1671 Blagrave Astrol. Physic 26 There are also some Sicknesses perperacute.

Oxford English Dictionary

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