humdinger /hum-dingˈər/ (slang)

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

• mushiest
• mushily
• mushiness
• mushinesses
• mushing
• mushmouth
• mush-mouthed
• mushmouths
• mushroom
• mushroom-anchor
• mushroom-anchors
• mushroom cloud
• mushroom clouds
• mushroomed
• mushroomer
• mushroomers
• mushrooming
• mushroom pink
• mushroom pinks
• mushrooms
• mushy
• music
• musical
• musical box
• musical boxes