exonerate (v.) Look up exonerate at Dictionary.com
mid-15c., from Latin exoneratus, past participle of exonerare "remove a burden, discharge, unload," from ex "out, out of, off" (see ex-) + onerare "to unload; overload, oppress," from onus (genitive oneris) "burden" (see onus). Related: Exonerated; exonerating.