De*rog"a*to*ry (?), a. Tending to
derogate, or lessen in value; expressing derogation; detracting;
injurious; -- with from, to, or unto.
Acts of Parliament derogatory from the power of
subsequent Parliaments bind not. Blackstone.
His language was severely censured by some of his
brother peers as derogatory to their order.
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.