impermeable

adjective

(ˌ)im-ˈpər-mē-ə-bəl How to pronounce impermeable (audio)
Definition of impermeablenext
1
as in impervious
impossible to get through or into the wall of security people surrounding the rock band was impermeable

Synonyms & Similar Words

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Antonyms & Near Antonyms
2
as in tight
not allowing penetration (as by gas, liquid, or light) an impermeable seal on the ancient tomb had preserved the artifacts exceptionally well

Synonyms & Similar Words

Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of impermeable Needing to remain impermeable to everything that is said about him is another stylistic exercise built into the equation of being a global star. — Time, Time, 26 June 2026 When a finger contacts an impermeable surface, sweat pores within the ridges release moisture that plasticizes the skin’s keratin layer, which increases friction in turn. — Scott Travers, Forbes.com, 14 Apr. 2026 Engineers eventually replaced them with a version made up of 20 impermeable compartments of high-pressure hoses containing water. — Mack Degeurin, Popular Science, 18 June 2026 Dry waterproofing technology, which is basically like an invisible, impermeable sock liner. — Olivia Young, Travel + Leisure, 29 May 2026 See All Example Sentences for impermeable
Recent Examples of Synonyms for impermeable
  1. impervious
  2. tight
  3. dense
  4. thick
  5. close
  6. impenetrable
  7. impassable
  8. impregnable
Adjective
  • Overloading Your Washer Even the softest of towels are not impervious to improper laundering, and overloading your washer or using too little water can affect how thoroughly the towels are washed.
    — Louise Parks, Martha Stewart, 30 June 2026
  • Crafted from durable high-density polyethylene, these Adirondack chairs are resistant to corrosion and impervious to the elements.
    — Melanie Fincher, Southern Living, 25 June 2026
Definition of impervious
Adjective
  • In a massive joint operation, US Central Command – with tight coordination from US Strategic Command, US Space Command, and the US Space Force – used electromagnetic warfare to blank out a massive area over Iran.
    — David Szondy July 06, New Atlas, 7 July 2026
  • In major competitions since Euro 1984 (including the UEFA Nations League), the contests have been tight affairs that have been decided by one goal or penalties.
    — Ben Church, CNN Money, 6 July 2026
Definition of tight
Adjective
  • Videos of the pyrotechnics display show the pitch filling with tall showers of sparks and dense smoke as dozens of fireworks launched upward.
    — Melissa Gomez, Los Angeles Times, 5 July 2026
  • The rare Saturday night game at the iconic North Side ballpark started an hour late due to rain, then fog billowed in from the north starting in the second inning and got denser.
    — ABC News, ABC News, 4 July 2026
Definition of dense
Adjective
  • The combination makes strands thicker, fuller, stronger, frizz-free, and softer—and thus, longer with less shedding and breakage.
    — Tamim Alnuweiri, InStyle, 2 July 2026
  • The brown, round cookie has arms and legs, one eyebrow thicker than the other, and one buck tooth.
    — Laura Sirikul, Forbes.com, 2 July 2026
Definition of thick
Adjective
  • Even though talks with the Boston Red Sox at last year’s deadline never got close, the confusion provided by an incorrect tweet announcing Ryan’s trade to New England put the pitcher at the top of every trade list before the season even began.
    — Dan Hayes, New York Times, 6 July 2026
  • Ashley Smith is the manager of player engagement for the NFL, and the siblings are close.
    — Pete Grathoff, Kansas City Star, 6 July 2026
Definition of close
Adjective
  • In the venue’s defense, the arena’s near-impenetrable exterior likely had something to do with its appeal.
    — Alli Rosenbloom, CNN Money, 1 July 2026
  • Quaintance, in particular, is potentially a monster on defense, and uniting him with Wembanyama might make this team virtually impenetrable.
    — John Hollinger, New York Times, 25 June 2026
Definition of impenetrable
Adjective
  • Officials on Saturday morning said the Gilman Trail is impassable and closed near the Edgelawn Avenue east trailhead due to flooding.
    — Aurora Beacon-News, Chicago Tribune, 4 July 2026
  • South of there, at Kessler Air Force Base, several roads became impassible.
    — Kenton Gewecke, ABC News, 16 June 2026
Definition of impassable
Adjective
  • Alexander the Great conquered it in 332 BCE after building a causeway to what had been considered an impregnable island fortress.
    — Jane Arraf, NPR, 23 June 2026
  • On that occasion a team made up of players who had all been born in Haiti shocked an Italy team famed for its impregnable defense.
    — Laurent Dubois, The Conversation, 10 June 2026
Definition of impregnable

Browse Nearby Words

impermanent
impermeable
impermissible
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Cite this Entry

“Impermeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impermeable. Accessed 7 Jul. 2026.

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More from Merriam-Webster on impermeable

Nglish: Translation of impermeable for Spanish Speakers

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