Right″ful (?), a. 1. Righteous; upright; just; good; — said of persons. Chaucer.
2. Consonant to justice; just; as, a rightful cause.
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. Belonging, held, or possessed by right, or by just claim; as, a rightful inheritance; rightful authority.
Syn. — Just; lawful; true; honest; equitable; proper.