1. Taught by one's own efforts

Encyclopedia: Self-taught

• rauvolfia
• rauwolfia
• Rauwolfia serpentina
• ravage
• ravaged
• ravager
• ravaging
• rave
• rave-up
• ravehook
• ravel
• ravel out
• ravelin
• raveling
• ravelling
• raven
• ravenala
• Ravenala madagascariensis
• ravener
• ravening
• Ravenna
• Ravenna grass
• ravenous
• ravenously
• ravenousness