D defs.my
Entry 4 senses Webster, 1913

Rightful

/rīt'-fəl/ · Right·ful · IPA /ˈɹaɪtfəl/
01 a. Righteous; upright; just; good; -- said of persons.
  1. 1.
    Righteous; upright; just; good; -- said of persons.[Obs.]
  2. 2.
    Consonant to justice; just; as, a rightful cause.
  3. 3.
    Having the right or just claim according to established laws; being or holding by right; as, the rightful heir to a throne or an estate; a rightful king.
  4. 4.
    Belonging, held, or possessed by right, or by just claim; as, a rightful inheritance; rightful authority.