Watertight

/ˈwɔːtərˌtaɪt/

Meaning & Definition

adjective
Completely sealed or impervious to water.
The new swimming pool cover is designed to be watertight, preventing any water from entering or escaping.
Figuratively, indestructible or unable to be contradicted; secure against criticism.
The lawyer presented a watertight case that left no room for doubt.
Involving no leaks, specifically in the context of containers or enclosures.
The watertight storage bins ensured that the food remained dry and fresh.

Etymology

The word 'watertight' is formed from 'water' + 'tight', indicating something that is tightly sealed against water.

Common Phrases and Expressions

watertight case
A situation or argument that is so strong it cannot easily be disproven.
watertight alibi
An alibi that is robust enough to withstand scrutiny.
watertight proof
Evidence that is indisputably strong and valid.

Related Words

waterproof
Able to resist water penetration.
tight
Firmly held in place; not loose.
seal
To close tightly to prevent the passage of water.

Slang Meanings

Foolproof
His plan was watertight, leaving no chance for failure.
Impeccable
She's got a watertight excuse for being late.