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Definitions

watertight

[waw-ter-tahyt, wot-er-] / ˈwɔ tərˌtaɪt, ˈwɒt ər- /

ADJECTIVE

hermetic

Synonyms

WEAK

completely sealed impervious sealed shut tight waterproof

ADJECTIVE

impermeable

Synonyms

WEAK

airtight dense hermetic impassable impervious leak-proof nonporous sealed water-resistant waterproof

ADJECTIVE

impervious

Synonyms

STRONGEST

immune impassable impenetrable inaccessible invulnerable resistant unaffected unmoved

STRONG

imperviable

WEAK

closed to hermetic impassive impermeable sealed tight unapproachable unpierceable unreceptive

Antonyms

STRONGEST

affected moved susceptible

WEAK

exposed open penetrable responsive sensitive vulnerable

ADJECTIVE

right

Synonyms

STRONGEST

correct perfect proper sure true valid

STRONG

absolute amen complete exact faithful nice real sound utter

WEAK

admissible authentic bona fide factual free of error genuine immaculate indubitable inerrant infallible just on the money on the nose out-and-out punctilious right as rain right on righteous rigorous satisfactory solemn strict thoroughgoing undistorted undoubted unerring unmistaken veracious veridical veritable

Antonyms

STRONGEST

false flawed imprecise inaccurate incorrect invalid unacceptable wrong

STRONG

imperfect incomplete inexact uncertain unreliable untrue

WEAK

inadmissible

ADJECTIVE

tight

Synonyms

STRONGEST

airtight fast short uncomfortable

WEAK

blind blocked bolted choking clumped cramping crushing cutting fastened firm fixed hermetic hermetically sealed impenetrable impermeable impervious locked nailed obstructed padlocked pinching plugged proof secure shrunken shut skintight slammed smothering snapped sound stopped up tied tied-up

Antonyms

STRONGEST

loose

WEAK

open slack unsealed

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

He meant that US security guarantees needed approval from Congress in Washington DC to make them watertight.

From BBC • Feb. 22, 2026

The crew needed a watertight soundstage for that scene, so they savvily constructed the set in the school’s empty pool, where overflowing water would not be an issue.

From MarketWatch • Dec. 29, 2025

Extent of the flooding if the bulkhead had been watertight.

From Barron's • Dec. 2, 2025

Tsui said he followed the inquest with "incredulity" as one witness after another dodged responsibility for the missing watertight door, a fault traced back to the ship's origin at a local shipyard.

From Barron's • Dec. 2, 2025

She would rebuild her platforms and make a watertight shelter.

From "A Girl Named Disaster" by Nancy Farmer

watertight

Example Sentences

Related Words