spillproof

English

spillproof (comparative more spillproof, superlative most spillproof)

Resistant to being spilled.
Synonyms: nonspill, nonspilling
- 2007 January 5, Cara Joy David, “Noises Off: Playgoers Sip, Munch and Crunch”, in New York Times‎^[1]:
  The New Amsterdam, home to “Mary Poppins,” serves all drinks — even Champagne — in spillproof keepsake plastic cups that muffle the sound of clinking ice, Some Nederlander theaters have begun using similar items, though at these you have to pay for the privilege of taking beverages back to your seat.