unnecessary

adjective

un·​nec·​es·​sary ˌən-ˈne-sə-ˌser-ē 

: not necessary

took unnecessary precautions

Synonyms of unnecessary

• extra
• optional
• needless
• irrelevant
• nonessential
• unwarranted
• redundant
• dispensable

Examples of unnecessary in a Sentence

In this city, owning a car is unnecessary.

Let's not take any unnecessary risks.

Recent Examples on the Web

This is essential to regain our global influence, end unnecessary risks to our service members and ensure our government can address Americans’ needs at home. — Elizabeth Shackelford, Chicago Tribune, 13 Nov. 2026

Normalize options for flexibility, workload reduction or time away without requiring unnecessary disclosure. — Expert Panel®, Forbes.com, 12 Nov. 2026

News of the club’s hierarchy meeting in Monaco on Wednesday to recommend replacing Carrick created an unnecessary saga that dragged the club legend through the wringer. — Ben Church, CNN Money, 12 Nov. 2026

Substantive permitting reform can eliminate unnecessary regulatory delays, encourage investment in critical energy infrastructure, and expand domestic energy production, helping increase supply and lower costs for American families. — The Editorial Board, Daily News, 12 Nov. 2026

Word History

First Known Use

15th century, in the meaning defined above

Rhymes for unnecessary

• accretionary
• apothecary
• bicentenary
• certiorari
• concessionary
• concretionary
• confectionary
• confectionery
• constabulary
• contemporary
• deflationary
• depositary

Kids Definition

unnecessary

adjective

un·​nec·​es·​sary ˌən-ˈnes-ə-ˌser-ē 

ˈən-

: not necessary