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Definitions

dinosaur

[dahy-nuh-sawr] / ˈdaɪ nəˌsɔr /
ADJECTIVE
obsolete
Synonyms
STRONGEST
antiquated archaic out-of-date outmoded
WEAK
anachronistic ancient antediluvian antique bygone dated dead dead and gone discarded disused done for dusty extinct fossil gone had it has-been horse and buggy kaput moldy moth-eaten old old-fashioned old-hat old-school out out-of-fashion outworn passé stale superannuated superseded timeworn unfashionable
Antonyms
STRONGEST
current modern new
WEAK
contemporary in vogue present up-to-date
ADJECTIVE
outmoded
Synonyms
STRONGEST
antiquated archaic obsolete out-of-date
STRONG
antique bent dated fossilized out outworn superannuated superseded tired
WEAK
anachronistic antediluvian behind the times bygone dead disused démodé extinct has-been horse and buggy moldy moth-eaten musty obsolescent old-hat old-time olden out of style passé unfashionable unstylish unusable vintage
Antonyms
STRONGEST
current modern new present
STRONG
fresh
WEAK
newfangled popular up-to-date

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.

Other species to have been named after the broadcaster in the past include a wildflower, butterfly, grasshopper, dinosaur and ghost shrimp.

From BBC • May 7, 2026

The study highlights how modern techniques can reveal detailed information about dinosaur behavior from even small traces preserved in fossils.

From Science Daily • May 5, 2026

Linda Helm, a member of the group, spotted dinosaur tracks.

From Science Daily • Apr. 24, 2026

Among them are the first dinosaur identified in the southern hemisphere, now known to be a stegosaur, along with sauropods, a coelurosaurian, and young iguanodontids.

From Science Daily • Apr. 24, 2026

Though none of these was technically a dinosaur, that wasn’t terribly relevant at the time since nobody then knew what a dinosaur was.

From "A Short History of Nearly Everything" by Bill Bryson

Vocabulary lists containing dinosaur

Tyrannosaurus Lex(icon)

Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!

Paleontology: Dinosaurs - Introductory

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Paleontology: Dinosaurs - Middle School and High School

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