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In English writing, parallelism occurs when similar or repeated clauses, words, and phrases occur in a sentence. The practice is primarily used to improve the aesthetics of your writing, as well as emphasize the importance of every element under discussion. As easy as the concept sounds, however, it’s super-tricky to implement. For starters,  parallelism is bound by different grammar usage guidelines and applicability rules, which makes faulty parallelism one of the most common grammatical sins among students and professional writers alike. Furthermore, faulty parallelism makes your texts hard to read, and sometimes, blurs the thin line between parallelism and plagiarism, casting the uniqueness of your writing into doubt.

Luckily for you, our online parallelism checker will analyze your texts, flag faulty parallelism, and then provide real-time correction suggestions. Better yet, the professional faulty parallelism checker features a comprehensive grammar checker, spell checker, and punctuation checker, making it the ultimate proofreading workhorse.

Common Faulty Parallelism Mistakes
and How to Spot Them

In this section, we have listed down some of the most common faulty parallelism mistakes that you’ll potentially come across in your writing.

Parallelism With Verb Tenses

One of the most prominent and equally pervasive parallel structure errors in writing entails verb tense shifting. Verbs are words and phrases used to convey an action in a sentence, and they include words such as drive, eat, sleep, etc. Switching from past tenses to present tenses spuriously, and vice versa, can confuse the readers and affect the overall flow of your texts.
Faulty parallelism: I really like this car, which was why I purchased it.
Correct parallelism: I really like this car, which is why I purchased it.

Parallel Structure With Correlative Conjunctions and Modifying Clauses

Another commonly occurring parallel structure error revolves around correlative conjunctions. As the name suggests, they are used to illustrate the relationship between two words or phrases in a sentence. Common correlative conjunction examples include words such as either, or, both, neither, nor, etc. When writing, ensure the first half of the correlative conjunction mirrors the second half respectively.
Faulty parallelism: The village was not only destroyed but also was washed away.
Correct parallelism: The village was not only destroyed but also washed away.

Parallel Structure With Bulleted Lists

When listing items of a bulleted list in your writing, always ensure they’re of the same size and type. For example, if the first item is listed as a sentence, the rest must be sentences. The same is true for the length and number of words.
Likewise, the listed must begin with a similar noun and verb, as well as utilize uniform tenses.

Parallelism With Gerunds and Infinitives

Another common parallelism error entails mixing gerunds and infinitive verbs in a single sentence, which makes your texts sound unbalanced and unnatural. Gerunds are verbs that end with the phrase -ing, and they’re mainly used as a noun in a sentence. Infinitive verbs, on the other hand, are special verbs that can be deployed as nouns, adjectives, and adverbs. When writing your texts, ensure your clauses and sentences are free from any mixed verb forms.
Incorrect: John loves to wash and repair cars.
The above sentence is incorrect because it incorporates an infinitive verb “to wash” and a gerund “repairing”. To eliminate this error, you need to rephrase the sentence entire sentence to ensure it uses one form:
Infinitives: John loves to wash and to repair cars.
Gerunds: John loves washing and repairing cars.

Benefits of Using Our Sentence Parallelism Checker vs Manual Checking

There are three primary methods you can use to check your texts for faulty parallelism. First, you can comb through your texts manually identifying every part of the sentence and ensuring all the elements are paired with similar, corresponding elements. Another method you can try is hiring a professional editor to streamline and eliminate grammar-related texts. 

Although fairly effective in stamping out errors, the above-mentioned editing methods do have their own shortcomings. And that’s where our combined parallelism finder and plagiarism scanner come in. Powered by advanced AI, NLP, and English grammar rules, this tool can accurately detect all grammar-related errors, improving the overall quality of your writing.

In this section, we are going to briefly compare manual checking vs our parallelism and plagiarism detector online tool to see which one emerges on top.


Editing and proofreading are easily one of the most monotonous and time-consuming phases throughout the entire writing process. You need to read and reread all your drafts, as well as make the necessary changes before handing in or publishing your work. Unfortunately, not everyone has the luxury of spending the entire day or week editing long manuscripts. And whilst hiring a professional editor is still an option, their services can cost an arm and a leg. Luckily for you, our parallelism checker online tool conducts deep scans of your writing, flags faulty parallelism, and suggests possible corrections. All this with a single click of a mouse.


Another benefit of using our free plagiarism scanner and faulty parallelism grammar checker lies in its versatility. Unlike human proofreaders who are limited by their technical editing experience and skills, our parallelism and originality scanner uses advanced AI algorithms, significantly expanding its capabilities. Along with flagging faulty parallelism, it can identify and correct grammar, spelling, and punctuation errors in your texts.


Just like in any other profession, human proofreaders can only do as much as their technical skills and know-how allow. As such, even the most proficient editor is still prone to making or overlooking some mistakes. To help you overcome this problem, our free online plagiarism detector is powered by advanced AI and NLP, giving it unmatched accuracy in flagging and correcting grammar errors.


As indicated above, hiring a professional editor can be doggone expensive. Worse still, you have to keep on consulting and engaging with the editor to ensure they deliver on time. Compounded together, the high cost of hiring a professional editor and the possibly lengthy turnaround time make manual checking ideal for projects with flexible deadlines. If you are working on a tight budget and deadline, however, an online parallelism sentence checker like ours will suit you. Along with offering a free-to-use version, our faulty parallelism and plagiarism detector lets you easily identify all grammar-related mistakes in a matter of seconds.


Unlike a human editor who needs to take breaks in between editing, the free plagiarism detector and parallelism checker is available 24/7. This allows you to edit and proofread your texts even when out traveling. What’s more, the online plagiarism detector is available as a Chrome extension, letting you catch mistakes when writing emails, social media posts, and filling in web forms.

Who Can Use Our Parallelism Checker Online Free Tool?

Being an all-rounded editing tool, our online duplicate scanner and faulty parallelism detector can be deployed across multiple writing genres. If you fall under the following category of people, the checker will make your editing and proofreading process less eventful.


Today, an average American college student writes between 13 and 15 essays per semester. This loose translates into 50 pages of writing, which by all standards of measures is a whole lot. This together with the pressures of juggling multiple classes makes it increasingly hard to deliver high-quality, error-free essays. Thanks to our parallelism and duplicate detector, students can automatically flag grammar transgressions with one click.

Teachers and professors

After writing their essays, students hand in their essays and academic paper to their professors for assessment and grading. While at it, teachers need to ensure students aren’t fraudulently presenting someone else’s papers as their own original work. As a teacher, accomplishing all these processes manually can be boring at the very least, and time-consuming, at most. But with our, you can grade students’ essays, as well as check for accidental plagiarism, all thanks to the comprehensive plagiarism detector free tool.

Journalists and writers

In today’s information-driven world, basic spelling and grammar errors in websites and digital platforms can negatively affect the credibility of your brand. In fact, a recent study in the UK showed that up to 60% of online customers would never purchase from websites that had silly grammar and spelling mistakes. If you are a journalist or a professional writer, the plagiarism scanner free detector scans your texts, highlights faulty parallelism, and offers real-time suggestions to correct the error.

Professionals and business executives

Curating emails, social media posts, marketing materials, and other documentation form a huge part of everyday corporate and business life. And in this highly-sensitive world, accurate and professional communication pays a premium. As such, professionals in these positions don’t have the luxury of sending out documents littered with grammar mistakes and typos. Our faulty parallelism checker is used by professionals to torpedo grammar, spelling, and punctuation faults in both online and offline documents.

English learners

Our tools also serve as a handy writing assistant to English learners, and it has the features to show for it. For starters, it comes with a grammar and vocabulary suggestions feature, which allows you to enrich your English grammar. Better yet, it gives a comprehensive contextual explanation behind every highlighted mistake, ultimately improving your grammar knowledge.

How Our Parallelism Sentence Checker Works

Deploying the parallelism and plagiarism checker to streamline your writing is a breeze. Here is a quick run-down of how the tool works: 

  • Copy-paste your texts into the tool. 
  • Click the Check button and wait for the tool to scan your texts.
  • The tool will momentarily return feedback highlighting all the errors in your writing.
  • Accept the suggestions by clicking on the highlighted mistakes.

Types of Papers That May Be Checked By Our Parallelism Checker

Our faulty parallelism checker is the most comprehensive editing and proofreading tool on the market. With a suite of features and functionalities, it goes way beyond faulty parallelism checks. Check your texts for grammar mistakes, punctuation errors, sticky sentences, repeated words, structure issues, readability, and so much more.

Here are some of the paper types and writing genres that are compatible with our checker:

Academic papers

Our parallelism grammar is compatible with all types of academic papers. Whether it's college entry exams, essays, term papers, thesis papers, dissertations, or research publications, the checker will help you write grammar-free papers.

Blogs and articles

The online parallelism sentence checker scans your blog and articles for any irregularities, like faulty parallelism, missing verbs, or wrong adverb placement, and prompts you to make amendments.

Emails and corporate documents

Our free parallelism checker can also be used by teams and corporations to promote consistent communication. It can flag errors in emails, social media posts, and web forms, which is key in building a strong reputation among readers.