realm

noun

ˈrelm 

1

: kingdom sense 3

2

: sphere, domain

within the realm of possibility

3

: a primary marine or terrestrial biogeographic division of the earth's surface

Synonyms

• area
• arena
• bailiwick
• barony
• business
• circle
• demesne
• department
• discipline
• domain
• element
• fief
• fiefdom
• field
• firmament
• front
• game
• kingdom
• line
• precinct
• province
• specialty
• sphere
• terrain
• walk

Examples of realm in a Sentence

new discoveries in the realm of medicine

in political and legal realms

Recent Examples on the Web

The first in the series, Crown of War and Shadow, introduces readers to a complex mystical realm, thrilling action sequences and a new sweeping love story. —Rachel Raposas, People.com, 20 June 2025

Indeed, it’s never made anything less than a good one, with a number of them ranking in the excellent-to-stone-cold-classic realm. —Jim Harrington, Mercury News, 20 June 2025

While beneficiaries treated by physicians received slightly better services in a few realms, the differences were marginal. —Web Golinkin, Forbes.com, 19 June 2025

And, indeed, the fantastical realm of Element City is gorgeously imagined, both futuristic and romantic. —Will Leitch, Vulture, 19 June 2025

Word History

Etymology

Middle English realme, from Anglo-French, alteration of Old French reiame, from Latin regimen control — more at regimen

First Known Use

13th century, in the meaning defined at sense 1

Phrases Containing realm

• coin of the realm
• outside the range/realm of possibility
• outside the realm of the possible
• within the range/realm of possibility
• within the realm of the possible

Rhymes for realm

• elm
• helm
• overwhelm

Kids Definition

realm

noun

ˈrelm 

1

: kingdom sense 1

2

: field of influence or activity

the realm of art