spillproof

[ spil-proof ]

adjective

1. (of a container) designed to prevent spilling. spill.

Word History and Origins

Origin of spillproof¹

spill ¹ + -proof

Example Sentences

These mugs — whether simply the standard drinkware on the station, or specific to the Raktajino — look like mini-carafes, with wide bases and small mouths, a delightfully fake future-y inverted design that perhaps nods to a profession that requires mugs to be spillproof in case of the occasional asteroid field or wormhole phenomenon.

From Seattle Times

It’s compact, utterly spillproof, and doesn’t slosh coffee into my face when I’m walking and sipping.

From The Verge

Once it was proven that the design had potential, others joined in to fine-tune it — fixing up the printing problems, adding a quarter turn, and making it spillproof.

From The Verge

Great American Spillproof Products was supposed to pay $6,559 a month on the note for five years, with a balloon payment for the entire unpaid amount and accrued interest due Aug. 13, according to the lawsuit.

From Washington Times

A lawsuit was filed in Newton County Circuit Court against his company, Great American Spillproof Products, the official owner of the 400-acre Dogpatch property.

From Washington Times