Derogatory clause in a testament
| (Law) | 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. |
See also: derogatory
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.