indemnify
v. US //ˌɪnˈdɛmnəˌfaɪ// UK //ˌɪndˈɛmnɪfˌaɪ// in·dem·ni·fy
From indemn (“unhurt”) + -ify (forming verbs)
From in- (“into”) + damnify (“to injure; to wrong”), assimilated to indemn and indemnify (“secure against loss; compensate, reimburse”).