Definition from Wiktionary, the free dictionary
- (usually with to) Tending to derogate, or lessen in value of someone; expressing derogation; detracting; injurious.
- (law) When referring to a clause in a testament: a sentence of secret character inserted by the testator alone, of which he reserves the knowledge to himself, with a condition that no will he may make thereafter shall be valid, unless this clause is inserted word for word; – a precaution to guard against later wills extorted by violence, or obtained by suggestion.
Usage notes 
tending to lessen in value
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Translations to be checked
derogatory (plural derogatories)
- A trade-line on a credit report that includes negative credit history.