redundancy

noun

re·​dun·​dan·​cy ri-ˈdən-dən(t)-sē 

plural redundancies

1

a

: the quality or state of being redundant : superfluity

b

: the use of redundant components

also : such components

c

chiefly British : dismissal from a job especially by layoff

2

: profusion, abundance

3

a

: superfluous repetition : prolixity

b

: an act or instance of needless repetition

4

: the part of a message that can be eliminated without loss of essential information

Did you know?

Redundancy, closely related to redound, has stayed close to the original meaning of "overflow" or "more than necessary". Avoiding redundancy is one of the prime rules of good writing. ""In the modern world of today" contains a redundancy; so does "He died of fatal wounds" and "For the mutual benefit of both parties". But redundancy doesn't just occur in language. "Data redundancy" means keeping the same computer data in more than one place as a safety measure, and a backup system in an airplane may provide redundancy, again for the sake of safety.

Synonyms

• circumlocution
• diffuseness
• diffusion
• garrulity
• garrulousness
• logorrhea
• long-windedness
• periphrasis
• prolixity
• verbalism
• verbiage
• verboseness
• verbosity
• windiness
• wordage
• wordiness

Examples of redundancy in a Sentence

Avoid redundancy in your writing.

Try to avoid using redundancies in your writing.

The design incorporates several redundancies.

a system with a high level of redundancy

The restructuring is expected to result in the redundancy of several hundred workers.

The workers are now facing redundancy.

Recent Examples on the Web

Maybe the redundancy is intentional, since Bree rarely works and may have missed whatever few shifts she’s assigned while in rehab. —Ben Travers, IndieWire, 19 June 2025

There’s redundancy with Flagg and Washington, forwards without many weaknesses in their games. —Jay King, New York Times, 19 June 2025

This synergy is not merely about eliminating redundancies, but about forging a more integrated and sophisticated product offering. —Alden Abbott, Forbes.com, 17 June 2025

Quadruple battery redundancy and double rotor redundancy (i.e. can operate using four of eight rotors) ensure safe flying. —New Atlas, 12 June 2025

Word History

First Known Use

1601, in the meaning defined at sense 1a

Kids Definition

redundancy

noun

re·​dun·​dan·​cy ri-ˈdən-dən-sē 

plural redundancies

1

: the quality or state of being redundant

2

a

: the use of unnecessary words

b

: an act or instance of needless repetition