water-tight Synonyms

Strongest:

No Weak antonyms found.

Webster

So tight as to retain, or not to admit, water; not leaky.

The submarine's hull was water-tight, ensuring it could withstand the immense pressure of the ocean depths.
The boat's seams were carefully caulked to create a water-tight seal and prevent leaks.
The astronaut's spacesuit was water-tight, protecting them from the harsh conditions of outer space.
The storage container was made of a water-tight material, keeping its contents dry and secure.
The waterproof jacket was water-tight, effectively shielding the wearer from rain and wind.
The underwater camera housing was water-tight, allowing it to capture images beneath the ocean's surface.
The water-tight seal on the diving helmet prevented water from entering the diver's breathing space.
The research vessel had a water-tight compartment designed to protect sensitive equipment from splashes and waves.
The water-tight lining of the irrigation system prevented water from seeping into unwanted areas.
The boat's deck was covered with a water-tight coating to prevent the absorption of moisture.

So tight as to retain, or not to admit, water; not leaky.

airtight, waterproof, leakproof, hermetical, hermetic, impermeable, compact, soundproof,dense, thick

permeable,permeable, porous, porous, pervious, unsealed, leaky, absorbent, penetrable, unsealed

The submarine's hull was water-tight, ensuring it could withstand the immense pressure of the ocean depths.

The boat's seams were carefully caulked to create a water-tight seal and prevent leaks.

The astronaut's spacesuit was water-tight, protecting them from the harsh conditions of outer space.

The storage container was made of a water-tight material, keeping its contents dry and secure.