Misuse

misuse, misapplication, perversion, debasement, degradation, ill-usage, misemployment, desecration, misappropriation, mishandling, mismanagement, pollution, improper use, exploitation, profanation, defilement, prostitution.

Antonyms respect, care*, veneration. *

Insulting language

invective, revilement, vituperation; see blame 1, insult.

Ill-treatment

injury, mistreatment, damage, harm, hurt, maltreatment, ill-usage, ill-treatment, molestation, molesting, battering, battery, outrage, impairment, wrong, injustice, violation, persecution, harassment.

Antonyms help*, defense*, benefit.

To treat badly

misuse, mistreat, insult, injure, hurt, harm, damage, impair, aggrieve, ill-treat, ill-use, batter, molest, maltreat, misemploy, misapply, misappropriate, wrong, persecute, torment, nag, victimize, oppress, ruin, mar, spoil, vulgarize, outrage, do wrong by, do wrong to, mishandle, pervert, profane, prostitute, desecrate, pollute, harass, manhandle, do an injustice to, take advantage of, exploit, overstrain, overwork, overtax, overdrive, overburden, violate, defile, impose upon, deprave, taint, debase, corrupt, squander, waste, dissipate, exhaust, do one's worst*, knock about*.

Antonyms defend*, protect*, befriend. *

To hurt with words

revile, malign, vilify, berate; see censure, scold, slander.