UNBREACHABLE Synonyms: 44 Similar and Opposite Words

unbreachable

adjective

Definition of unbreachable

as in inviolable

Related Words

Relevance

Dissimilar Words

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 unbreachable This gap used to be the most unbreachable chasm in marketing. — Jason Barnard, Rolling Stone, 12 Nov. 2025 But there has always been an unbreachable barrier between them and us. — Jeffrey Kluger, Time, 6 Nov. 2025 Dump trucks with tires twice my height rolled past us, ferrying dirt like so many ants, building what Bardini and his fellow-engineers hope will be unbreachable barriers. — James Ross Gardner, The New Yorker, 12 Jan. 2023 Best to arrive at her fort defenseless to have half a chance at challenging her own almost unbreachable defense system. — Bono, Vogue, 5 Nov. 2022 There are times when the gap between Catra and Adora felt unbreachable, and then there's the horrible robotic hivemind stuff in the final season. — Christian Holub, EW.com, 17 Feb. 2022 At the start of Europe’s migration crisis in 2015, the English Channel was regarded as an unbreachable barrier, its shifting currents and volatile weather making any attempt to cross too dangerous. — New York Times, 25 Nov. 2021 This reduces what were once formerly unbreachable barriers to entry to many industries. — Bill Fischer, Forbes, 29 Sep. 2021 The act of crossing over the supposedly unbreachable rivers of race is meant to be shameful. — Nylah Burton, refinery29.com, 26 Sep. 2021

Recent Examples of Synonyms for unbreachable

Adjective

But Washington has said that the principle of free navigation in international waters is inviolable, a stance echoed by Gulf states that rely on the strait for much of their trade.

— Tim Lister, CNN Money, 11 Oct. 2026
Lai, who won election two years ago, and his ruling DPP champion Taiwan’s separate identity from China, a position that frequently angers Beijing, which views the island as an inviolable part of Chinese territory.

— Reuters, NBC news, 19 July 2026

Definition of inviolable

Adjective

This past season offered unassailable proof that Shohei Ohtani can no longer serve as both a full-time hitter and full-time pitcher.

— Los Angeles Times, Los Angeles Times, 21 Oct. 2026
As the movie demonstrates, Macdonald’s credentials as a comic’s comic were unassailable.

— Owen Gleiberman, Variety, 16 Oct. 2026

Definition of unassailable

Adjective

Like Ambedkar, 30-year-old CJP leader Abhijeet Dipke is a Dalit, or untouchable within the Hindu caste system.

— Amrita Basu, The Conversation, 22 Oct. 2026
Sure enough, the Brewers untouchable bullpen immediately got to work, getting a shutdown inning as JoJo Romero got Ohtani, Mookie Betts, and Freddie Freeman in order on just 12 pitches.

— Ian Miller OutKick, FOXNews.com, 16 Oct. 2026

Definition of untouchable

Adjective

Their security infrastructure is more impregnable than that of a bank.

— Gideon Lewis-Kraus, New Yorker, 19 Oct. 2026
Dropped catches from Steve Smith, Green and Travis Head ensured yesterday's brief rally in the field fizzled out and allowed Bangladesh to bat itself into an almost impregnable position.

— ABC News, ABC News, 14 Aug. 2026

Definition of impregnable

Adjective

With Joanne’s no-seriously-this-time decision to convert, previously insurmountable obstacles have melted away.

— Angie Han, HollywoodReporter, 22 Oct. 2026
D’Eriq King, Miami, 2020 King used his arm and his feet to slice and dice the Seminoles en route to an insurmountable 38-3 halftime lead which ended up as a 52-10 win.

— Steve Svekis, Sun Sentinel, 17 Oct. 2026

Definition of insurmountable

Adjective

McClellan is particularly interested in examining the contrast between the seemingly invincible figures photographed in the arena and their often precarious lives outside it.

— Robert Lang, Deadline, 19 Oct. 2026
In some Bengali traditions, Vijayadashami rituals include Aparajita Puja, the worship of the goddess in her invincible form, sometimes represented by the butterfly pea plant.

— Encyclopedia Britannica, Encyclopedia Britannica, 9 Oct. 2026

Definition of invincible

Adjective

The Spurs are almost as bulletproof as Oklahoma City on that end of the floor, but the Thunder have a bit more versatility and are more seasoned.

— James L. Edwards III, New York Times, 27 May 2026
Later grants were used to install bulletproof glass around a playground near the street, as well as bulletproof glass in other classroom windows.

— Jeff McDonald, San Diego Union-Tribune, 25 May 2026

Definition of bulletproof

Browse Nearby Words

unbraids

unbreachable

unbreakable

See all Nearby Words

Cite this Entry

Style

“Unbreachable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unbreachable. Accessed 30 Oct. 2026.

Copy Citation

Synonyms of unbreachable

adjective

Example Sentences

Browse Nearby Words

Cite this Entry

More from Merriam-Webster

Word of the Day

reticent

Popular in Grammar & Usage

How to Use 'Who' vs. 'Whom'

Merriam-Webster’s Great Big List of Words You Love to Hate

'Affect' vs. 'Effect'

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

Why is '-ed' sometimes pronounced at the end of a word?

Popular in Wordplay

The Longest Long Words List

9 Words That Sound Like Insults But Aren't

Pwn, Skibidi, Girlboss and Other Words Added to the 2026 Scrabble Dictionary

The Words of the Week - Oct. 30

12 Lovely and Unusual Words for the Natural World

Popular

How to Use 'Who' vs. 'Whom'

The Longest Long Words List

9 Words That Sound Like Insults But Aren't

Games & Quizzes