Artificial intelligent assistant

convail

convail, convale, v. Obs. rare.
  [ad. OF. conval-oir, conval-ant to recover health, f. con- + valoir: cf. L. convalēscĕre in same sense]
  To grow strong, recover strength.

c 1500 Poem on Heraldry 2 (E.E.T.S. Extra Ser. 1869) So convalit vicis & variance..So that few mycht laubour for discrepance. a 1532 Remed. Love 410 (R. Suppl.) Whereby reviled Causelesse he is, never to convaile. 1692 Coles, Convail, to recover.

Oxford English Dictionary

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