absolve, acquit, amnesty, antisepticize, autoclave, boil, chlorinate, clear, delouse, destigmatize, discharge, disinfect, dismiss, dispense from, exculpate, excuse, exempt, exempt from, exonerate, forgive, free, fumigate, give absolution, grant amnesty to, grant immunity, grant remission, hygienize, justify, let go, let off, nonpros, pardon, pasteurize, purge, quash the charge, release, remit, sanitate, sanitize, set free, shrive, sterilize, vindicate, whitewash, withdraw the charge

For further exploring for "decontaminate" in Webster Dictionary Online

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