Opposite word for abuse:

Synonyms

invective, contumely, reproach, scurrility, insult, opprobrium.

maltreat, injure, revile, reproach, vilify, vituperate, asperse, traduce, malign

                                                                                                

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Meaning:  To put to a wrong use; to misapply; to use improperly; to misuse; to use for a wrong purpose or end; to pervert