The most common mistake with ‘similarly’ in academic writing is using it to connect two ideas that are not genuinely parallel in structure or logic. Many writers treat ‘similarly’ as a simple synonym for ‘also’ or ‘and,’ which often leads to weak comparisons or false analogies. In academic contexts, ‘similarly’ signals a precise parallel between two items, arguments, or findings. When the connection is only superficial, the word creates confusion and weakens your argument.
Quick answer: Use ‘similarly’ only when two things share a clear, logical parallel in structure, function, or outcome. Do not use it to add a second point that is merely related. Check that your sentence pattern mirrors the comparison: if X does Y, then Z similarly does W. If the parallel is not exact, choose a different linking word.
Why ‘similarly’ causes problems
The word ‘similarly’ belongs to the comparison family of linking words. Its job is to show that two items follow the same pattern or share a key characteristic. In academic writing, this is a powerful tool. However, writers often misuse it in three main ways: forcing a false parallel, using it where ‘also’ or ‘furthermore’ would fit better, and placing it in a sentence that does not match the grammatical structure of the previous sentence.
False parallel
A false parallel happens when you claim two things are similar, but the connection is weak or misleading. For example, saying “The experiment used a control group. Similarly, the lab was clean.” These two facts are not parallel. One is about methodology, the other about environment. A reader expects the second sentence to mirror the first in some meaningful way.
Overuse as a filler
Some writers sprinkle ‘similarly’ into every paragraph because it sounds formal. This dilutes its power. When every comparison is marked as ‘similar,’ no comparison stands out. Academic readers need clear signals. Overusing ‘similarly’ makes your writing feel repetitive and imprecise.
Grammatical mismatch
When you use ‘similarly’ to start a sentence, the sentence that follows should have a parallel structure to the one before it. If the first sentence is about a cause and effect, the second should also describe a cause and effect. If the first sentence uses a passive verb, the second should not switch to an active verb without a clear reason. Breaking this pattern confuses the reader.
Comparison table: ‘similarly’ vs. common alternatives
| Word | Meaning | When to use | Example |
|---|---|---|---|
| Similarly | Shows a direct parallel | Two items share a key feature or pattern | “The first study found a correlation. Similarly, the second study confirmed this link.” |
| Likewise | Shows agreement or parallel action | Formal writing, often for actions or behaviors | “Group A improved after training. Likewise, Group B showed gains.” |
| Also | Adds information | Simple addition, no strong parallel needed | “The study measured heart rate. It also recorded blood pressure.” |
| Furthermore | Adds supporting evidence | Extending an argument with new points | “The policy reduced costs. Furthermore, it improved efficiency.” |
| In the same way | Emphasizes identical method or logic | When the process or reasoning is identical | “The algorithm sorts data. In the same way, it filters outliers.” |
Natural examples of correct usage
Seeing ‘similarly’ in context helps you understand when it works. Below are examples from different academic scenarios.
Example 1: Research findings
“The 2019 survey showed a preference for remote work among younger employees. Similarly, the 2021 survey indicated that flexibility remained a top priority for the same demographic.”
Here, the parallel is clear: both surveys measure the same group on the same topic, and both show a consistent result. The structure mirrors: survey + year + showed/indicated + preference.
Example 2: Argument structure
“Economic growth in urban areas often leads to increased infrastructure spending. Similarly, population growth in suburban regions drives demand for new schools and roads.”
Both sentences follow the pattern: growth in location + leads to/drives + need for specific investment. The parallel is logical and grammatical.
Example 3: Methodology
“The first experiment used a double-blind design to reduce bias. Similarly, the second experiment employed a randomized control group to achieve the same goal.”
Both sentences describe a method used to reduce bias. The structure is parallel: experiment + used/employed + specific design + purpose.
Common mistakes with ‘similarly’
Below are frequent errors that appear in student essays and early drafts. Each mistake includes an explanation and a correction.
Mistake 1: Using ‘similarly’ for unrelated additions
Wrong: “The study examined sleep patterns in teenagers. Similarly, the researchers used a questionnaire.”
Why it is wrong: The first sentence is about what the study examined. The second is about the tool used. These are not parallel. One is a topic, the other is a method.
Corrected: “The study examined sleep patterns in teenagers. It also used a questionnaire to collect data.” Or: “The study examined sleep patterns in teenagers. Similarly, it examined screen time habits in the same group.”
Mistake 2: Forcing a false analogy
Wrong: “The company increased its marketing budget. Similarly, the weather improved in spring.”
Why it is wrong: There is no logical parallel between a business decision and weather. The reader expects a connection that does not exist.
Corrected: Remove ‘similarly’ entirely or rephrase: “The company increased its marketing budget. At the same time, the weather improved, which may have boosted sales.”
Mistake 3: Breaking grammatical structure
Wrong: “The first theory was widely accepted by scholars. Similarly, many students find the second theory convincing.”
Why it is wrong: The first sentence uses passive voice (was accepted). The second uses active voice (find). The grammatical shift breaks the parallel. The reader senses something is off even if they cannot name it.
Corrected: “The first theory was widely accepted by scholars. Similarly, the second theory was widely accepted by students.”
Mistake 4: Overusing ‘similarly’ in a single paragraph
Wrong: “The first factor is cost. Similarly, the second factor is time. Similarly, the third factor is quality. Similarly, the fourth factor is location.”
Why it is wrong: Repeating ‘similarly’ four times makes the writing feel mechanical. The reader stops seeing the comparison and starts seeing a list.
Corrected: Use ‘similarly’ once for the strongest parallel, then switch to ‘also,’ ‘in addition,’ or ‘another factor is.’
Better alternatives to ‘similarly’
When you feel tempted to write ‘similarly,’ pause and ask: Is this a true parallel? If not, choose one of these alternatives based on your meaning.
- Also: Use for simple addition. “The study measured anxiety. It also measured depression.”
- Furthermore / Moreover: Use to add a new point that supports your argument. “The policy reduced emissions. Furthermore, it created jobs.”
- Likewise: Use in formal writing when two actions or behaviors match. “The control group showed no change. Likewise, the placebo group remained stable.”
- In the same way: Use when the method or logic is identical. “The first test used a 5-point scale. In the same way, the second test used a 5-point scale.”
- By comparison / In contrast: Use when you want to highlight differences, not similarities. “The urban area grew rapidly. By comparison, the rural area shrank.”
When to use ‘similarly’ effectively
Use ‘similarly’ when you can answer yes to all three questions:
- Are the two items truly parallel in a meaningful way?
- Does the grammatical structure of both sentences match?
- Will the reader immediately see the connection without extra explanation?
If the answer to any question is no, choose a different word. ‘Similarly’ is a precision tool, not a general connector. Save it for moments where the parallel is exact and important.
Mini practice: Test your understanding
Read each sentence pair. Decide if ‘similarly’ is correct. If not, suggest a better word.
Question 1: “The first chapter introduces the main character. Similarly, the second chapter describes the setting.”
Answer: Incorrect. These are not parallel actions. One introduces a character, the other describes a setting. Use ‘also’ or ‘in addition.’
Question 2: “The 2020 data showed a decline in sales. Similarly, the 2021 data showed a decline in sales.”
Answer: Correct. Both sentences follow the same pattern: year + data showed + decline in sales. The parallel is exact.
Question 3: “The first experiment used a sample of 100 participants. Similarly, the second experiment used a sample of 100 participants.”
Answer: Correct. The method and sample size are identical. The grammatical structure matches.
Question 4: “The author argues that technology improves education. Similarly, the weather is warm in summer.”
Answer: Incorrect. There is no logical connection between the argument and the weather. Remove ‘similarly’ and rephrase or delete.
FAQ: Common questions about ‘similarly’
Can I start a sentence with ‘similarly’?
Yes, starting a sentence with ‘similarly’ is common in academic writing. It signals to the reader that the next sentence will parallel the previous one. Just ensure the grammatical structure matches.
Is ‘similarly’ formal or informal?
‘Similarly’ is formal and fits well in academic essays, research papers, and professional reports. It is less common in casual conversation or informal emails. In everyday speech, people often say ‘same here’ or ‘me too’ instead.
What is the difference between ‘similarly’ and ‘likewise’?
Both show similarity, but ‘likewise’ often implies agreement or a matching action. ‘Similarly’ focuses more on a parallel in characteristics or results. In many contexts, they are interchangeable, but ‘likewise’ can sound slightly more formal or old-fashioned.
Can I use ‘similarly’ in a list?
It is better to avoid using ‘similarly’ for every item in a list. Use it once for the strongest parallel, then switch to ‘also,’ ‘in addition,’ or ‘furthermore.’ Repeating ‘similarly’ makes your writing sound repetitive and weakens the impact.
For more guidance on using linking words correctly, explore our resources on Linking Words by Purpose and Common Writing Mistakes. If you have questions about this guide, visit our FAQ or contact us.
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