- endomorphisms
- waterbuck
- water buffalo
- water bug
- Waterbury
- Waterbury State Technical College
- waterbus
- water caltrop
- water cannon
- water chestnut
- water chinquapin
- water clock
- water closet
- water clover
- watercolor
- water-cool
- water cooler
- watercourse
- watercraft
- watercress
- water cure
- water cycle
- water dog
- waterdogging
- watered