dual

1 of 2

adjective

du·​al ˈdü(-ə)l 

also ˈdyü-əl

1

of grammatical number : denoting reference to two

a dual pronoun

2

a

: consisting of two parts or elements or having two like parts : double

families with dual incomes

held dual citizenship in France and the U.S.

a dual function

a dual exhaust system

b

: having a double character or nature

dual

2 of 2

noun

1

linguistics : the dual (see dual entry 1 sense 1) number of a language

2

linguistics : a linguistic form in the dual

Synonyms of dual

Adjective

• twin
• binary
• double

Examples of dual in a Sentence

Adjective

the dual purpose of the study

She pursued dual careers in music and acting.

Recent Examples on the Web

Adjective

The property features water conservation features such as dual-flush toilets and low-flow fixtures, with refillable aluminum water bottles and water bottle refill stations. —Condé Nast, Condé Nast Traveler, 14 May 2026

Nicholas Daley’s dual heritage of Scottish and Jamaican ancestry has always been a mainstay of his brand’s creative process and design ethos. —Kanika Talwar, Footwear News, 13 May 2026

Noun

Huntington Beach boys won the league meet to claim the title after finishing third in league duals with a 4-2. —Dan Albano, Oc Register, 2 May 2026

Wrestling – All-conference, team duals state champion. —Pioneer Press, Twin Cities, 14 Apr. 2026

Word History

Etymology

Adjective and Noun

Latin dualis, from duo two — more at two

First Known Use

Adjective

1597, in the meaning defined at sense 1

Noun

1650, in the meaning defined at sense 1

Phrases Containing dual

• dual carriageway
• dual citizenship
• dual energy X-ray absorptiometry
• dual meet
• dual-purpose

Rhymes for dual

• accrual
• nonfuel
• refuel
• renewal
• biofuel
• contextual
• nonrenewal
• nonsexual
• unusual
• cruel
• duel
• fuel

Kids Definition

dual

adjective

du·​al

ˈd(y)ü-əl

1

: consisting of two parts or elements : having two parts alike

dual headphone jacks

2

: having a double character or nature

a dual function

dual citizenship

duality

d(y)ü-ˈal-ət-ē

noun

dually

ˈd(y)ü-ə-lē

adverb

Etymology

Adjective

from Latin dualis "dual," from duo "two" — related to deuce, double, dozen