exonerate
v.
mid-15c., from Latin exoneratus, past participle of exonerare "remove a burden, discharge, unload," from ex- "off" (see ex-) + onerare "to unload; overload, oppress," from onus (genitive oneris) "burden" (see onus). Related: Exonerated; exonerating.
〔李〕[ex-=out of 在…外；oner=burden 负担；-ate v.=to make 使…⇒“to make sb. out of burden 使某人免受负担”→] v. relieve from a duty；free from blame 使免除责任；使免罪