Why Your Content Shows 40% Plagiarism (+ Easy Fix Plan)

You wrote something on your own, but the plagiarism detector found some underlying traces of unoriginality. And your stomach drops!

Bearing up under the pressure, you rewrote those duplicated sections using a variety of techniques, but the checker still detected around 40% of plagiarism in your work.

Now, you have started wondering why my content shows a high plagiarism percentage even after rewriting. If this sounds like you, then you don’t need to panic because you’re not alone.

Every blogger, professional, and student goes through the same thing at some point in their journeys. But the good news is that such a problem is easily fixable if you identify its root cause. And that’s exactly what we’re going to do here. So, let’s dig in!

What the Similarity Score Actually Means

Before getting to our main course here, it is essential to clarify some concepts. And one of them is understanding what a similarity score actually means.

So, when a plagiarism detector generates a similarity score, most people think that the tool has understood that they have copied, paraphrased, or rewritten something that already exists. But that’s wrong!

In reality, such a score is simply an indication of content overlap, which is mainly what forms your similarity index in the plagiarism report.

So, when people look for the reasons for a high Turnitin similarity score, we only tell them to ask themselves:

Where is my text matching existing material, and why?

And if you don’t know the reasons, let’s try to pinpoint them in the next section!

The Root Causes Behind the 40% Plagiarism Score

The most common misperception about plagiarism is that it only happens when you directly duplicate text from an already-existing source. What people fail to realize is that plagiarism may also occur due to the following reasons:

1. The Use of Common Sentences

When crafting textual content, most people rely on common phrases like these:

At the end of the day
Follow these simple steps
In an exclusive interview
In conclusion, it can be said
In order to ensure
In today’s fast-paced world
Once upon a time
Please find attached
Refer to the manual for further details
The purpose of this research
This study aims to examine
Your satisfaction is our priority

That’s simply because using them feels natural. However, they silently increase your similarity score. And if your content features a bunch of them, it can climb fast in the similarity index.

2. Copied Phrase Patterns

No doubt that paraphrasing is an effective way to avoid the risk of plagiarism. However, rephrasing does not mean simply replacing words with synonyms. In fact, if you only use synonym replacement, your work would be regarded as poor paraphrasing because its rhythm and structure would be quite similar to the original version.

Here is an example to help you better understand all of this:

Original Source Text: “Social media has become an essential marketing tool for modern businesses because it allows brands to reach large audiences, engage directly with customers, and promote products at a relatively low cost.”

Synonym-Swapping Version: Social media has turned into a vital marketing tool for today’s businesses because it enables brands to reach big audiences, interact directly with customers, and advertise products at a lower cost.

Slight Restructured Version: Because it helps companies reach wide audiences, communicate with customers, and promote products cheaply, social media has become an important marketing tool for businesses today.

As you can see, both synonym swapping and even slight restructuring have failed to make the text unique.

So, when people follow this practice, the cutting-edge plagiarism detectors spot content overlap problems in their work because they don’t just detect word-similarity; they are smart enough to analyze the structure as well.

3. Missing or Weak Citations

Citation issues are one of the main reasons for plagiarism. However, some people miss it completely because it is hidden, or they are unaware that it causes plagiarism.

In reality, what actually happens is that people rephrase or quote someone else’s ideas without crediting the original information owner. And when they ‘do’ cite the source, they do it wrongly, especially when they are not familiar with proper academic formatting and APA heading and citation structure rules.

Such a practice also gets flagged by plagiarism checkers because they spot borrowed ideas without attribution.

4. Over-Reliance on Source Material

When it comes to creating textual content, most writers follow this practice:

Read a Source → Close It → Rewrite It From Memory.

Technically, this strategy feels safe. However, what really happens is that when people don’t take breaks between the research and the writing phases, they accidentally start mirroring the structure of the source. Why?

Well, simply because the details get stuck in their head, and when they write, they unconsciously mirror the source. In fact, that’s how accidental copying occurs in the first place.

Before vs. After Results — How the Real Fixes Actually Look

Now that you've seen how a poorly rephrased text leads to plagiarism, let’s have a look at the real solution:

As you can see, the ‘BEFORE’ version feels rewritten, not rethought, because its structure is similar to the source. Plus, the ideas there appear in the same sequence. On the other hand, the ‘AFTER’ variant feels less similar because sentences start from a new perspective, the ideas have been merged and reorganized, and even the phrasing and vocabulary feel fresh.

So, that’s what fixing plagiarism can do!

Now, let’s learn how to actually accomplish something like the ‘AFTER (Low Similarity Version)’ in the next section.

Step-by-Step Fixing Plan to Reduce the Similarity Score

If you’re wondering how to reduce plagiarism after checking, well, here is a simple step-by-step process that you can follow:

Step 1: Open the Report and Act Strategically

When people see a 40% similarity score, or another significant figure in their plagiarism reports, they immediately panic and start rewriting everything. However, we assure you that such a problem is fixable only by acting strategically. So do not panic at all.

What you should do is ignore the little matches like common words, references, and titles. Instead, you should concentrate on the long highlighted sections, where the real problem exists. That’s because your goal here is to correct the patterns and not the percentage.

Step 2: Rewrite the Structure, Instead of the Words

When revamping the plagiarized sections, you don’t need to change the words only. Instead, you should also rework the text at the structural level.

To do so, ask yourself questions like these:

Can I combine or split sentences?
Can I explain this in a simpler way?
Can I start with a different idea?

If you can, then do all of these, as doing so will truly make your content unique.

However, some people use AI writing tools, especially when they find it hard to rewrite anything on their own. Such tools may subtly affect how unique your writing is. Therefore, before using them mindlessly, you should learn how AI writing tools impact content originality and plagiarism detection.

Step 3: Immediately Add the Missing Citations

As we’ve mentioned earlier, modern plagiarism detectors work by spotting the uncited text sections. So, if you’ve taken the idea from elsewhere and quoted or paraphrased it, you should cite its reference. And make sure to do so by following a proper citation style.

Doing so will significantly reduce the similarity score in your plagiarism report.

Step 4: Replace the Generic Phrases

Generic sentences, such as the ones we’ve stated above in this blog post, can silently lead a content piece to plagiarism. So, make sure to avoid them at all costs. If you have to use them, try their alternatives.

For instance, instead of concluding an idea like this: ‘In conclusion, it can be said,’ you can use a different variation, such as this: ‘Overall, the findings suggest.’ Similarly, for technical writing, you can avoid the most commonly repetitive phrase, such as ‘This study aims to explore’ by ‘This paper examines.’

However, writer’s block can sometimes halt the flow of inspiration. In such situations, people struggle to come up with alternative ideas for even the most basic concepts. So, if you find yourself in a similar situation when trying to substitute generic terms, use an online plagiarism remover. This tool can help you generate alternative ideas for any content. So, you can use them to experiment with general statements and find suitable replacements.

The Real Truth Most People Often Overlook

Let’s be honest—if your vocabulary is weak, it can cause repetitive phrasing and higher similarity scores. In fact, this is one of the major reasons for text duplication. So, if you naturally want to avoid content overlap, you should invest in learning the practical ways to strengthen your vocabulary for plagiarism-free writing.

However, this doesn’t mean that you should start using fancy words because they can do more harm than good. For instance, they may showcase your command of vocabulary, but they can make your content difficult to understand, eventually ruining its essence. So, learn to strategically use the right word.

And remember, a higher similarity score doesn’t always mean bad writing. It simply indicates that your:

Work closely resembles that of an existing source
Paraphrasing needs structural editing
Content needs proper citations

So, don’t panic when the similarity index of your text cranks up. Instead, act strategically!

Concluding Remarks

All in all, a 40% plagiarism score may feel scary at first, but the good news is, it is rarely permanent. That’s because, once you understand how plagiarism detectors check content overlap, how missing references create citation problems, and how weak rewriting leads to poor paraphrasing, you can systematically fix your score.

So, next time you check your report and if it shows a similarity score, act strategically by following the above-mentioned tips to truly free your work from plagiarism.

Why Your Content Still Shows 40% Plagiarism (And How to Fix It)