1. Not allowable as a deduction

Antonym: deductible

• waterless
• waterlessness
• waterline
• waterlogged
• waterloo
• waterman
• watermark
• watermeal
• watermelon
• watermelon begonia
• watermelon vine
• watermelon-shaped
• waterpower
• waterproof
• waterproofed
• waterproofing
• waters
• waterscape
• watershed
• waterside
• waterskier
• waterskin
• waterspout
• watertight
• Watertown