poly-poly- /pɒlɪ $ pɑː-/ prefix 
many: 
polysyllabic (=with three or more syllables)
many: polysyllabic (=with three or more syllables)- waterproof
- waterproofed
- water rat
- water-repellent
- water resistant
- watershed
- waterside
- water ski
- water skier
- water skiing
- water slide
- Waters, Muddy
- water softener
- water-soluble
- water sports
- waterspout
- water stress
- water table
- watertight
- water tower
- water vapour
- water vole
- Ignatius of Loyola, St
- igneous
- ignite