Synonyms of leakproof

leakproof

adjective

as in waterproof

unable to be penetrated by water because of construction or treated material

the campers stayed dry in their leakproof tents

Synonyms & Similar Words

• waterproof
• staunch
• waterproofed
• watertight
• water-resistant
• weatherproof
• nonabsorbent
• rainproof
• water-repellent
• nonporous

Antonyms & Near Antonyms

• porous
• absorbent
• leaky

Example Sentences

Recent Examples of leakproof

Each container comes with a leakproof, airtight, and BPA-free plastic lid that is safe for use in the microwave, dishwasher, and freezer, so each one is easy to use and clean. — Alicia Geigel, Southern Living, 14 July 2026

Instead, they should be placed in a leakproof container filled with alcohol to kill them, and a doctor should be contacted to safely remove the remaining maggots. — Shiv Sudhakar, FOXNews.com, 14 July 2026

Each leakproof food storage container and bowl in this 24-piece set comes with an airtight lid and is made from BPA-free glass. — Stephanie Osmanski, Better Homes & Gardens, 25 June 2026

The plastic bottle is leakproof, with an easy-to-use (and clean) drinking spout. — Taylor Fox, Travel + Leisure, 23 June 2026

For example, ads for Knix’s leakproof underwear were spotted inside New York City subway cars this spring, and often on Hulu. — Alyssa Goldberg, USA Today, 8 June 2026

The tumbler’s leakproof lid also rotates for three comfortable sipping positions. — Sian Babish, PEOPLE, 3 June 2026

LifeStraw’s redesigned Peak Series Straw features a durable, leakproof design that’s great for backcountry treks. — Sheena Vasani, The Verge, 22 May 2026

The leakproof water tank lid is easily opened by pulling up on its bottom edge. — Bestreviews, Mercury News, 13 May 2026