1. With indefatigable energy
   - indefatigably, inexhaustibly, unflaggingly

See also: tireless

• epanodos
• epanorthosis
• eparch
• eparchial
• eparchy
• epaulet
• epaulette
• epauliere
• epeirogenesis
• epeirogeny
• ependyma
• epenthesis
• epenthetic
• epergne
• epexegesis
• epha
• ephah
• ephebe
• ephedra
• Ephedra sinica
• Ephedraceae
• ephedrine
• ephemera
• ephemeral
• ephemerality