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most ancient

ADJECTIVE

old, often very old

Synonyms

STRONGEST

age-old antique archaic hoary old-fashioned timeworn venerable

STRONG

aged antediluvian bygone elderly fossil oldie relic remote

WEAK

antiquated back number been around creaky early few miles on lot of mileage moth-eaten obsolete old goat older out-of-date outmoded primal primeval primordial rusty superannuated worse for wear

Antonyms

STRONGEST

current fresh modern new

STRONG

young

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.

But according to the “NOVA” presentation “Mammal Origins,” our most ancient ancestors existed as long ago as 270 million years.

From The Wall Street Journal • Feb. 10, 2026

"While the last universal common ancestor is the most ancient organism we can study with evolutionary methods," said Goldman, "some of the genes in its genome were much older."

From Science Daily • Feb. 10, 2026

Last summer, in a peaceful corner of one of England's most ancient forests, birdsong met boom mics.

From BBC • Nov. 28, 2025

Olfaction is the most ancient of animal senses, said Catherine Price, a behavioral ecologist at the University of Sydney in Australia.

From Los Angeles Times • Mar. 1, 2024

There is something intrinsically good-natured about all symbiotic relations, necessarily, but this one, which is probably the most ancient and most firmly established of all, seems especially equable.

From "The Lives of a Cell" by Lewis Thomas