1. The quality of requiring extended effort
   - laboriousness, toilsomeness

Derived forms: operosenesses

See also: operose

Type of: effortfulness

• struth
• Struthio
• Struthio camelus
• struthiomimus
• Struthionidae
• legatine
• legation
• legato
• legator
• legend
• legendary
• legendary creature
• leger
• leger line
• legerdemain
• legerity
• legged
• legging
• leggy
• leghorn
• legibility
• legible
• legibly
• leging
• legion