·adj Consonant to justice; just; as, a rightful cause.
II. Rightful ·adj Righteous; upright; just; good;
— said of persons.
III. Rightful ·adj Belonging, held, or possessed by right, or by just claim; as, a rightful inheritance; rightful authority.
IV. Rightful ·adj 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.