Parallelism in Grammar: Definition, Rules, Types and Examples

Parallelism is a grammar technique that helps make writing clear, balanced, and easy to understand. Whether you are writing essays, speeches, stories, or academic assignments, using parallel structure can improve the flow of your sentences and make your ideas more effective. You may already use parallelism in everyday speech without realising it. For example, in the sentence ‘She likes reading, writing, and painting,’ all the activities follow the same grammatical pattern. This balance creates a smooth and natural sentence. In this article, you will learn the meaning of parallelism, how it works, its types, common mistakes, and plenty of examples to help you understand the grammar concept.

Table of Contents

• What is Parallelism?
• How Does Parallelism Work?
• When Should You Use Parallel Structure?
• Rules of Parallelism in English Grammar
• Types of Parallelism
• Parallelism in Grammar vs in Rhetoric and Literature
• Examples of Parallelism in Sentences
• Common Mistakes in Parallelism
• Parallelism Exercises

What is Parallelism?

Parallelism is also called parallel structure or parallel construction. It is the practice of using grammatically similar words, phrases, clauses, or sentence structures to express ideas of equal importance within a sentence or across multiple sentences.

In simpler terms, when you list or compare items, they should all follow the same grammatical ‘shape’. This creates balance, clarity, and rhythm.

Example: 

Without parallelism (incorrect): She likes reading, to swim, and hiking.

With parallelism (correct): She likes reading, swimming, and hiking. Here, all three activities are expressed as gerunds (-ing forms), making the list balanced and easy to read.

Why is parallelism important?

Parallelism makes writing:

• Clear and easy to understand

• More organized and logical

• Grammatically correct

• Pleasant to read

• More persuasive and memorable

Without parallelism, sentences may sound awkward or confusing.

 

How Does Parallelism Work?

The main principle of parallelism is balance through consistent grammatical form. When two or more elements in a sentence carry equal weight, they should be written in the same grammatical structure, part of speech, verb tense, or type of clause.

• Parallel items in a list: When providing a list of items within a sentence, all items should be in the same syntactic form (all nouns, all verbs, all adjectives, etc.).
  Incorrect: I had grilled steak, mashed potatoes, and was eating stir-fried vegetables.
  Correct: I had grilled steak, mashed potatoes, and stir-fried vegetables. 
• Parallel points in a list or outline: When listing out bullet points or numbered steps, ensure each item follows the same structure. Steps to revise an essay:

  • Read through the entire draft.

  • Identify weak arguments.

  • Rewrite unclear sentences.

• Parallel verb forms in a series of actions: When mentioning a series of actions, all verbs should be in the same form.
  Incorrect: Rahul loves watching horror movies and to play video games.
  Correct: Rahul loves watching horror movies and playing video games. 
• Parallel clauses joined by conjunctions: When two or more clauses express similar or contrasting ideas, they should share the same syntactic structure.
  Example: She studies hard, she completes her assignments, and she participates actively in class.
  A common punctuation rule that accompanies parallelism is the use of commas to separate parallel words, phrases, or clauses within a series.

 

When Should You Use Parallel Structure?

Parallelism should be applied in the following situations:

With coordinating conjunctions (for, and, nor, but, or, yet, and so): When connecting two or more phrases with coordinating conjunctions, ensure they share the same grammatical form.

Example: I will meet my friends in Bengaluru and visit my cousins on the way.

With correlative conjunctions: Correlative conjunctions come in pairs: either…or, neither…nor, both…and, not only…but also. Elements on both sides of these pairs should be parallel.

Example: She is not only a skilled writer but also an accomplished speaker.

When making comparisons using ‘than’ or ‘as’

Example: We would rather lie under the stars than sleep in a cramped tent.

When listing multiple actions or items

Example: Online classes and remote work have become the new normal since the start of the pandemic. 

Rules of Parallelism in English Grammar

Here are some rules you need to follow when using parallelism: 

• Keep Words in the Same Form
  Incorrect: She likes dancing, to sing, and painting.
  Correct: She likes dancing, singing, and painting.

• Keep Phrases Parallel
  Incorrect: The job requires attention to detail, being organised, and communication skills.
  Correct: The job requires attention to detail, organisational skills, and communication skills.

• Keep Clauses Parallel
  Incorrect: He said that he would study hard and finishing the project.
  Correct: He said that he would study hard and that he would finish the project.

• Use Parallel Structure with Conjunctions: Words joined by conjunctions such as 'and', 'or', 'but', 'either...or', and 'neither...nor' should be parallel.

Types of Parallelism

Parallelism can appear in different forms depending on how words, phrases, or ideas are arranged in a sentence. The following table explains the main types of parallelism with simple examples.

Parallelism in Grammar vs in Rhetoric and Literature

Although the term ‘parallelism’ is used in both grammar and literary studies, the emphasis differs slightly.

Parallelism in Grammar

In grammar, parallelism is primarily a structural principle. Its main purpose is to make sentences grammatically correct, natural-sounding, and easy to follow. Breaking this principle results in what is called faulty parallelism. These sentences often feel awkward and are sometimes difficult to understand.

Non-parallel: The three pillars of the campaign are supporting local businesses, reducing crime, and education.

Parallel: The three pillars of the campaign are supporting local business, reducing crime, and increasing educational funding.

What Is Faulty Parallelism?

Faulty parallelism occurs when items in a sentence do not follow the same grammatical structure, making the sentence awkward or confusing.

 

Parallelism in Rhetoric and Literature

In rhetoric and literature, parallelism goes beyond grammar. Writers and speakers use it deliberately to create rhythm, add emphasis, suggest connections between ideas, and heighten emotional impact. Some of history's most powerful speeches and literary works owe their memorability to masterful parallelism.

Consider Charles Dickens's use of parallel past tense verbs in ‘Great Expectations’ or the parallel ‘that’ clauses in Bram Stoker's ‘Dracula’. In each case, parallelism does more than ensure grammatical correctness; it shapes the reader's experience of the text.
 

Examples of Parallelism in Sentences

Here are some examples of parallelism in sentences: 

• He likes reading, writing, and listening to music.

• The students were excited, motivated, and prepared.

• She cleaned the room, washed the dishes, and completed her homework.

• The project requires planning and execution.

• Either you study regularly or you practise consistently.

• The experiment was designed to collect data, analyse results, and draw conclusions.

• Students should focus on understanding concepts, solving problems, and improving skills.

Examples in Famous Literature and Speeches

• Martin Luther King Jr. (Anaphora + Parallelism):
  "I have a dream that one day…I have a dream that my four little children will one day live in a nation where they will not be judged by the colour of their skin but by the content of their character."

• Winston Churchill (Anaphora):
  "We shall fight on the beaches, we shall fight on the landing grounds, we shall fight in the fields and in the streets, we shall fight in the hills; we shall never surrender."

• Shakespeare's ‘Julius Caesar’ (parallel nouns + antithesis):
  "Friends, Romans, countrymen, lend me your ears; I come to bury Caesar, not to praise him."
  
  

Common Mistakes in Parallelism

Mixing verb forms in a list

Incorrect: She enjoys dancing, to sing, and going for runs.

Correct: She enjoys dancing, singing, and going for runs.

Mixing nouns with verbs or clauses

Incorrect: The course covers grammar, writing techniques, and how to improve vocabulary.

Correct: The course covers grammar, writing techniques, and vocabulary improvement.

Faulty parallelism with correlative conjunctions

Incorrect: She is not only dedicated to her studies but also hard work is something she values.

Correct: She is not only dedicated to her studies but also committed to hard work.

Inconsistent tenses in a series of actions

Incorrect: He walked into the room, sat down, and is asking for a glass of water.

Correct: He walked into the room, sat down, and asked for a glass of water.

Parallelism Exercises

Try combining the following sentences using parallelism.

• My brother will not watch TV. He will not let me watch TV either.

• Susan has been to Paris. Susan has not been to Turkey.

• We went on a trip to Hampi. We trekked up the Anjanadri Hill. We went on a coracle ride in Sonapur Lake.

• Soumia works as an operations manager. She also freelances as a model.

• Pollution is affecting plants, animals, and humans. Pollution is causing irreversible damage to the planet.

Answers:

• Neither will my brother watch TV, nor will he let me watch TV.

• Susan has been to Paris but not to Turkey.

• On our trip to Hampi, we trekked up the Anjanadri Hill and went on a coracle ride in Sonapur Lake.

• Soumia not only works as an operations manager but also freelances as a model.

• Pollution is affecting the lives of plants, animals, and humans and causing irreversible damage to the entire planet.