humdinger /hum-dingˈər/ (slang)

1. An exceptionally excellent person or thing
2. A smooth-running engine
3. A swift vehicle or aircraft

• stirp
• stirpes
• stirpiculture
• swelts
• swept
• sweptback
• sweptwing
• swerf
• swerfed
• swerfing
• swerfs
• Swerga
• swerve
• swerved
• swerveless
• swerver
• swervers
• swerves
• swerving
• swervings
• sweven
• swevens
• swey
• sweyed
• sweying