IMPERTINENT a.
Contrary to, or offending against, the rules of propriety or good breeding; guilty of, or prone to, rude, unbecoming, or uncivil words or actions; as, an impertient coxcomb; an impertient remark.
INCESTTUOUS a.
Guilty of incest; involving, or pertaining to, the crime of incest; as, an incestuous person or connection. Shak. Ere you reach to this incestuous love, You must divine and human rights remove. Dryden. -- In*cest"tu*ous*ly, adv. -- In*cest"tu*ous*ness, n.