1. By committing to memory
   "she knew the poem by heart"
   - by memory

Encyclopedia: By heart

• homonym
• homonymic
• homonymous
• homonymy
• homoousian
• homophile
• homophobe
• homophobia
• homophobic
• homophone
• homophonic
• homophonous
• homophony
• Homoptera
• homopteran
• homopterous
• homopterous insect
• homosexual
• homosexualism
• homosexuality
• homosporous
• homospory
• homostyled
• homostylic
• homostylous