1. With indefatigable energy
   - indefatigably, inexhaustibly, unflaggingly

See also: tireless

• Klaproth
• klatch
• klatsch
• Klaus Fuchs
• klavern
• screw pine
• screw propeller
• screw thread
• screw tree
• screw wrench
• screw-loose
• screw-pine family
• screw-topped
• screwball
• screwballer
• screwbean
• screwbean mesquite
• screwdriver
• screwer
• screwing
• screwtop
• screwup
• screwworm
• screwy
• Scriabin