sem·i 
(sĕmī, sĕmē)
(sĕmī, sĕmē)n. pl. sem·is
Informal
Informal
1.
a. A semitrailer.
b. A tractor-trailer.
2. A semifinal.
3. A semiformal dance.
- waterproof
- water purslane
- water rat
- water-repellent
- water-resistant
- water right
- Waters
- water sapphire
- waterscape
- water scooter
- water scorpion
- watershed
- water shield
- watershield
- waterside
- water ski
- waterski
- water-ski
- water-skier
- waterskin
- water snake
- waters of hydration
- water softener
- water-soluble
- water spaniel