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

This is a threat especially in the realm of SaaS, where credibility with technical users is currency and being deemed vaporware is a mortal sin. —Alexander Puutio, Forbes.com, 10 June 2025

The protagonist of this beguiling novel, Lina, lives with her father in a realm seemingly unbound by ordinary time. —The New Yorker, New Yorker, 9 June 2025

For some creators, their aviation photography and online posts fall in the realm of hobby. —Jake Goodrick, Sacbee.com, 8 June 2025

The father and son were briefly on the same continent in late May when the King and Queen Camilla traveled to Canada for the State Opening of Parliament in what was interpreted as a show of support for the Commonwealth realm amid tensions with the U.S., but Harry and Charles didn't cross paths. —Simon Perry, People.com, 6 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