as in ancient
dating or surviving from the distant past
found evidence in the Middle East of an antediluvian people previously unknown to history
Synonyms & Similar Words
Relevance
Antonyms & Near Antonyms
as in conservative
a person with old-fashioned ideas
thought his dad was an antediluvian for refusing to use any social media
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 antediluvian
Virginia Konchan, The New Yorker, 30 Sep. 2024
Unfortunately, that view seems antediluvian these days.
—Andrew C. McCarthy, National Review, 9 Dec. 2023
As advanced as the futuristic environment was visually, the team found innovation by juxtaposing the setting with its people and their antediluvian mindsets.
—Rendy Jones, Rolling Stone, 3 July 2023
The big transmission lever feels slightly antediluvian in what is otherwise a quite modern interior.
—Jonathan M. Gitlin, Ars Technica, 14 Apr. 2023
See All Example Sentences for antediluvian
Adjective
Glory be to god for logjams, the antediluvian dark,
for being a supply of goodness outpacing demand
because so many prefer their egos’ endless ranting
to the suggestion of a different narrator or narrative.
—Recent Examples of Synonyms for antediluvian
Adjective
-
On a cold winter afternoon, António and Jota return from the front with their friends, looking for an ancient Roman thermal bath.—
-
Over time, Thompson and her colleagues have unearthed more burials, ancient human DNA and tiny human bone fragments.—
Noun
-
House conservatives had expressed opposition to earmarks within the package.—
-
Meghan McCain, a conservative who left the program in 2021, has regularly targeted her former workplace on her own podcast.—
Adjective
-
Roughly one hundred Uffizi staffers staged a demonstration in the courtyard of the venerable Florence institution on January 4, protesting an effective layoff of the museum’s casual workers spurred by a change in service managers.—
-
Lorch died in 2012, but his actions, and how much, if any, responsibility the venerable institution should take for them, will be at issue in the case.—
Noun
-
Populists, protectionists, fossil-fuel lobbies, to name a few.—
-
Mongolia has spent years fighting for the return of dinosaur fossils from around the globe.—
Adjective
-
The quaint city suffered very little damage during World War II, meaning its distinctly medieval structures have managed to remain intact over the years.—
-
Take the quiz here … LEGENDARY LISTING – Jaw-dropping medieval castle with 100 rooms hits market with nearly 1,000 years of history.—
Noun
-
Old fogey-ish, ungrateful and stupid.—
-
These are people who know AI and have grown up with this stuff that these old fogies haven't.—
Adjective
-
Brake gently as needed - Brake normally if the vehicle has anti-lock brakes and pump brakes gently if in an older vehicle.—
-
Come late January or early February, Denver could be down its defensive coordinator, a whiz-kid offensive mind, and a slightly older whiz-kid defensive mind.—
Noun
-
The agreement includes bipartisan bills worked out by the Senate Appropriations Committee to fund parts of government — food aid, veterans programs and the legislative branch, among other things.—
-
Mills and the Texans’ offense scored a touchdown on all three of their fourth-quarter drives, including the veteran quarterback capping a 14-play, 93-yard drive with a 14-yard run to complete the comeback and give Houston a 30-29 lead — its first of the game.—
Cite this Entry
“Antediluvian.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/antediluvian. Accessed 13 Jan. 2026.
Love words? Need even more definitions?
Merriam-Webster unabridged
Share