Artificial intelligent assistant

regrede

regrede, v.
  (rɪˈgriːd)
  [ad. L. regredī to turn back, f. re- re- + gradī to go: cf. regrade v.2 and regress v.]
  intr. To retrograde, go back.

1865 Chambers' Encycl. s.v. Perturbation, The effect of a disturbing force continually directed towards the plane of the ecliptic, is to make the node regrede. 1873 Proctor Moon 163 Since..the lunar nodes thus regrede, or, as it were, meet the advancing moon.

Oxford English Dictionary

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