What Is Redundancy?
Redundancy occurs when a word, phrase, or passage repeats information that is already present in the same sentence or paragraph. The reader receives no new information from the second expression, and the repetition suggests the writer did not notice they had already made the point.
Redundancy is related to but distinct from wordiness. All redundancy is a form of wordiness — using more words than necessary — but wordiness can also occur through circumlocutions that are not strictly repetitive. Redundancy specifically involves repeating content.
Types of Redundancy
Pleonasms: Redundant Word Pairs
A pleonasm is a phrase in which one word's meaning is already contained in another. The modifier adds nothing because the noun or verb already implies it.
| Redundant Phrase | Why It's Redundant | Concise Version |
|---|---|---|
| past history | history is by definition in the past | history |
| future plans | plans are made for the future | plans |
| free gift | a gift is by definition free | gift |
| advance warning | a warning is always given in advance | warning |
| added bonus | a bonus is already an addition | bonus |
| end result | a result comes at the end | result |
| close proximity | proximity means closeness | proximity or nearby |
| completely unanimous | unanimous means all agree | unanimous |
| final outcome | outcome implies finality | outcome |
| true fact | a fact is by definition true | fact |
| unexpected surprise | a surprise is always unexpected | surprise |
| first began | beginning is the first occurrence | began |
| revert back | revert already means to go back | revert |
| return back | return already means to come back | return |
Redundant Pairs
Some constructions join two words with and or or where both words mean nearly the same thing. One is sufficient:
- each and every → each or every
- null and void → void
- cease and desist → cease (in plain-language contexts)
- first and foremost → first
- one and the same → the same
- any and all → all
Some of these pairs survive as idioms in legal and formal contexts where their conventions are fixed. In plain-language writing, one word is enough.
Categorical Redundancy
Categorical redundancy occurs when a noun specifies a category that the preceding noun already establishes:
- the color red (red is already a color) → red
- the city of Chicago (Chicago is known to be a city in most contexts) → Chicago
- at the hour of noon → at noon
- in the month of January → in January
- the period of time → the period
- round in shape → round
Sentence-Level Redundancy
Redundancy also occurs across sentences when a writer states the same idea in different words without adding new information:
- The proposal was rejected. It was not accepted by the committee. (same information twice)
- The deadline is Friday. All submissions must be received by Friday. (restating rather than adding)
The second sentence in each pair should either be cut entirely or replaced with genuinely new information (why was the proposal rejected? what happens to late submissions?).
Structural Redundancy
Some redundancy is structural. An introduction that explains what the piece is about to say, followed by the content, followed by a conclusion that explains what was just said, is a three-part sandwich where the bread repeats the filling. In academic and professional writing, introductions and conclusions serve specific functions — but those functions should not be to simply duplicate the content. The introduction should frame the argument; the conclusion should resolve it. Neither should merely restate the body.
Redundancy vs. Deliberate Repetition
Not all repetition is a flaw. Deliberate repetition can serve rhetorical, stylistic, and structural purposes:
- Anaphora — repeating a phrase at the start of successive clauses — creates rhythm and emphasis: We will fight, we will persist, we will succeed.
- Key terms in academic writing are often repeated deliberately so the reader can track the argument.
- A transitional sentence that refers to the previous paragraph's main point before introducing the next is not redundant — it is structural guidance for the reader.
The distinction: redundancy adds nothing and can be cut without loss. Deliberate repetition serves a purpose, and removing it would harm the prose. The test is simple: if you cut the repeated element and the piece is clearer and better, it was redundancy. If the piece loses something, it was intentional.
How to Find Redundancy in Your Writing
When revising:
- Search for the most common pleonasms listed in the table above. These appear in almost every draft.
- For any two consecutive sentences, check whether the second one says anything that was not already in the first. If not, cut the second or merge the useful parts.
- Read the introduction and conclusion side by side. If the conclusion only restates the introduction, revise it to resolve, extend, or complicate the argument instead.
- Look for modifiers before nouns that describe a category already inherent in the noun (shape, color, time expressions).
For more on the broader revision process, see the guide on how to edit and proofread.
Frequently Asked Questions
Is all repetition in writing bad?
No. Repetition of key terms is often necessary in academic writing to maintain clarity and track an argument. Rhetorical repetition can create emphasis and rhythm. The problem is unintentional redundancy — repeating information accidentally, without any purpose or effect. Intentional repetition with a clear function is a different matter entirely.
Why do writers create redundancy without noticing?
Writers produce redundancy for several reasons: they are building toward a point and recapping to hold their train of thought; they are padding to reach a word count; they do not trust the reader to have absorbed the first statement; or they have simply not revised carefully. Reading your work aloud helps — redundancy tends to register as something you have already heard.
What is the difference between redundancy and emphasis?
Emphasis says something twice to make it land harder or ensure it registers. Redundancy says something twice with the same words in the same weight, producing dilution rather than reinforcement. This is critical — absolutely critical is emphasis. This is critical and very important is redundancy, since both words say the same thing without adding force.
Does removing redundancy always shorten a piece?
Yes, but that is not the primary goal. The goal is to maintain the same amount of information in fewer words, so the piece is denser and each word carries more weight. Sometimes removing redundancy from one section creates space to develop a different part of the argument more fully — so the total length may stay the same while the content quality improves.