Does this verb have any currency in modern English?
OED doesn’t have this as a separate entry (as you and the good Doctor likely know). The last use of this verb with this spelling is:
1562 A. Scott Poems (1896) i. 108 As waspis ressauis of þe same bot soure, So reprobatis Christis buke dois rebute.
which may be the MW reference that Dr. T offers.