WordNet sense 1 (regain or make up for):

recoup, recuperate

WordNet sense 2 (get or find back; recover the use of):

find, regain, retrieve

WordNet sense 3 (reuse (materials from waste products)):

reclaim

WordNet sense 4 (regain a former condition after a financial loss):

go back

WordNet sense 5 (get over an illness or shock):

convalesce