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

Encyclopedia: By heart

• encainide
• encamp
• encampment
• encapsulate
• encapsulation
• encase
• encased
• encasement
• encash
• encashment
• encaustic
• enceinte
• Encelia
• Encelia farinosa
• Enceliopsis
• Enceliopsis nudicaulis
• encephalartos
• Encephalartos caffer
• encephalic
• encephalitis
• encephalitis lethargica
• encephalo-
• encephalocele
• encephalogram
• encephalography