Quiz: Remember the definition of mal de mer?
1530s, from Middle French réhabilitation and directly from Medieval Latin rehabilitationem (nominative rehabilitatio) "restoration," noun of action from past participle stem of rehabilitare, from re- "again" (see re-) + habitare "make fit," from Latin habilis "easily managed, fit" (see able). Specifically of criminals, addicts, etc., from 1940.
1570s, "to bring back to a former condition after decay or damage," back-formation from rehabilitation and in part from Medieval Latin rehabilitatus, past participle of rehabilitare. Meaning "to restore one's reputation or character in the eyes of others" is from 1847. Related: Rehabilitated; rehabilitating.
rehabilitate re·ha·bil·i·tate (rē'hə-bĭl'ĭ-tāt')
v. re·ha·bil·i·tat·ed, re·ha·bil·i·tat·ing, re·ha·bil·i·tates
To restore to good health or useful life, as through therapy and education.
To restore to good condition, operation, or capacity.
In politics, the restoration to favor of a political leader whose views or actions were formerly considered unacceptable. (Compare nonperson.)