curious

adjective

cu·​ri·​ous ˈkyu̇r-ē-əs 

ˈkyər-

1

a

: marked by desire to investigate and learn

They were curious as to who won the game.

The cat was curious about its new environment.

b

: marked by inquisitive interest in others' concerns : nosy

curious about the neighbors' doings

2

: exciting attention as strange, novel, or unexpected : odd

a curious coincidence

We were concerned about his curious behavior.

3

a

archaic : made carefully

b

archaic : precisely accurate

c

obsolete : abstruse

curiousness noun

Did you know?

Since the 1300s, "curious" has been variously used to describe things that in some way require, invite, or are characterized by carefulness or inquisitiveness. In so doing, it carries on the legacy of its Latin source, the adjective curiosus, meaning "careful" or "inquisitive." The comparative of "curious" is "more curious," though it is not unusual to encounter the phrase "curiouser and curiouser," made popular by the title character of Alice's Adventures in Wonderland who, Lewis Carroll tells us, "was so much surprised that for the moment she quite forgot how to speak good English."

Synonyms of curious

• inquisitive
• interested
• prying
• nosy

Choose the Right Synonym for curious

curious, inquisitive, prying mean interested in what is not one's personal or proper concern.

curious, a neutral term, basically connotes an active desire to learn or to know.

children are curious about everything

inquisitive suggests impertinent and habitual curiosity and persistent quizzing.

dreaded the visits of their inquisitive relatives

prying implies busy meddling and officiousness.

prying neighbors who refuse to mind their own business

Examples of curious in a Sentence

The cat was naturally curious about its new surroundings.

They were curious to find out who won the game.

We're curious about why you never called us.

I'm curious to know more about her.

She found a curious old clock in the attic.

The birds were engaged in some curious behavior.

Their music is a curious blend of disco and rock.

By a curious coincidence, they bought a house the same day their old one burned down.

Recent Examples on the Web

Then there is the curious case of the Georgian director Alexandre Koberidze, who shot his latest feature, Dry Leaf, with the camera of a nearly twenty-year-old mobile phone. —Dennis Lim, The New York Review of Books, 25 Apr. 2026

And now, with a myriad of buzzy new restaurants helmed by some of France’s top chefs and curious creatives from around the world eager to experiment with the territory’s rich ingredients, Biarritz is becoming an epicure’s paradise in its own right. —Monica Mendal, Vogue, 24 Apr. 2026

Nathan MacKinnon managed to keep his cool Thursday despite getting mugged every shift and drawing some curious calls — Embellishment? —Sean Keeler, Denver Post, 24 Apr. 2026

Written through the intuitive and curious perspectives of 12-year-olds, this memorable project manages to capture both their developing skills and innocent but sincere efforts to understand another generation. —Denise Crosby, Chicago Tribune, 24 Apr. 2026

Word History

Etymology

Middle English, from Anglo-French curios, from Latin curiosus careful, inquisitive, from cura cure

First Known Use

14th century, in the meaning defined at sense 1b

Phrases Containing curious

• bi-curious

Rhymes for curious

• furious
• spurious
• injurious

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Kids Definition

curious

adjective

cu·​ri·​ous ˈkyu̇r-ē-əs 

1

: eager to learn

a cat curious about its new surroundings

2

: inquisitive sense 2

3

: attracting attention by being strange or unusual : odd

a curious old coin

that's curious—they were here yesterday

curiously adverb

curiousness noun

Etymology

Middle English curious "made carefully, skillful, eager to learn," from early French curios (same meaning), from Latin curiosus "careful, inquisitive," from cura "care, healing" — related to accurate, cure