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
If you make a derogatory remark or comment about someone or something, you express your low opinion of them. He refused to withdraw derogatory remarks made about his boss. derogatory remarks, attitudes etc are insulting and disapproving