Etymology
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injure (v.)
mid-15c., "do an injustice to, dishonor," probably a back-formation from injury, or else from Old French injuriier "to damage; offend," from Latin iniuriari "do an injury," from iniuria. Injury itself also served as a verb meaning "to injure, hurt, harm" (late 15c.). Related: Injured; injuring.
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uninjured (adj.)
1570s, from un- (1) "not" + past participle of injure (v.).
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vitiate (v.)

"to render vicious, faulty, or imperfect; injure the quality or substance of," 1530s, from Latin vitiatus, past participle of vitiare "to make faulty, injure, spoil, corrupt," from vitium "fault, defect, blemish, crime, vice" (see vice (n.1)). Related: Vitiated; vitiating.

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discreditable (adj.)

"tending to injure reputation," 1630s; see discredit + -able. Related: Discreditably.

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scathe (v.)

c. 1200, from Old Norse skaða "to hurt, harm, damage, injure," from Proto-Germanic *skathan- (source also of Old English sceaþian "to hurt, injure," Old Saxon skathon, Old Frisian skethia, Middle Dutch scaden, Dutch schaden, Old High German scadon, German schaden, Gothic scaþjan "to injure, damage"), from PIE *sket- "to injure." Only cognate outside Germanic seems to be in Greek a-skethes "unharmed, unscathed."

It survives mostly in its negative form, unscathed, and in figurative meaning "sear with invective or satire" (1852, usually as scathing) which developed from the sense of "scar, scorch" used by Milton in "Paradise Lost" i.613 (1667).

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maliciousness (n.)

"extreme enmity or disposition to injure; actions prompted by hatred," mid-15c., from malicious + -ness.

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overuse (v.)

also over-use, "use too much or too frequently; injure by excessive use," 1670s, from over- + use (v.). Related: Overused; overusing.

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nocuous (adj.)

1630s, "noxious, harmful," from Latin nocuus "harmful," from stem of nocere "to hurt, injure, harm" (from PIE root *nek- (1) "death"). Especially of venomous serpents.

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damage (v.)
Origin and meaning of damage

"cause damage to, hurt, injure, harm," early 14c., from Old French damagier, from damage "loss caused by injury" (see damage (n.)). Related: Damaged; damaging.

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prejudice (v.)

mid-15c., prejudicen, "to injure or be detrimental to," from prejudice (n.) and from Old French prejudiciier. The meaning "to affect or fill with prejudice, create a prejudice (against)" is from c. 1600. Related: Prejudiced; prejudicing.

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