Artificial intelligent assistant

perennal

peˈrennal, a. Obs.
  [Cf. OF. perennel (14th c. in Godef.), ad. L. type *perennāl-is = L. perennis.]
  = perennial.

c 1485 Digby Myst. (1882) iii. 637 Good lord of lorddes, my hope perhenuall [? perhennall], With þe to stond In grace and fawour to se. 1635 D. Person Varieties i. 5 In respect of the Heavens perennall and incessant rotation, and the Ayres continuall revolution. 1681 Rycaut tr. Gracian's Critick 37 Those perennal Streams of Fountains.

Oxford English Dictionary

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