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The Collaborative International Dictionary
Exorbitate

Exorbitate \Ex*or"bi*tate\, v. i. [L.exorbitatus, p. p. of exorbitare. See Exorbitant.] To go out of the track; to deviate. [Obs.]
--Bentley.

Wiktionary
exorbitate

vb. (context obsolete English) To go out of the track; to deviate.