When it comes to best IELTS Training classes, Sahasriya leads the way with over 2500 successful students. In Bengaluru or Chennai-Velachery and Porur or Coimbatore, the best success rate destination always ends up at Sahasriya. Thats why Sahasriya provides value to students through its Interesting English series too. Everyday’s note on important aspects of English language is a standing example of narrating experiences of IELTS Training classes inputs from Sahasriya. Today, it is about ‘Illusion’ and ‘Delusion’.

Many words in English are confusing. They may appear similar, and they may even have related meanings.

In most cases, though, words have clear definitions and should be used carefully. Using the wrong word could confuse your reader, or it could cause your writing to say something that you did not mean.

Illusion and delusion are two confusing words that are mixed up by many writers. As mix-ups go, this one is usually fairly benign—the difference between an illusion and a delusion is usually small, and many readers might not notice a difference.

Still, it is important to use language intentionally. Doing so will strengthen your writing and bolster your credibility, especially in academic and professional settings. Illusion and delusion have specific meanings, so it is important to know when to use each.

When to Use Illusion

IELTS Training Classes IllusionWhat does illusion mean? Illusion is a noun that refers to either something that is not as it appears or a misperception.

Here are a few examples,

  • Many optical illusions rely on forced perspective to trick the eye into misjudging the relative proportions of two or more objects.
  • “The oasis is just an illusion,” said the guide, pointing to a mirage on the horizon.
  • The relative calm of the jungle gives an illusion of safety and peace.

An illusion exists in one’s fancy or imagination. It can be innocent or benign. While an illusion is a wrong perception, but is it not as serious as delusion.

When to Use Delusion

IELTS Training Classes DelusionWhat does delusion mean? delusion is also a misperception, but this word usually refers to a dangerous misperception or an idea that misleads a person into dangerous patterns of thought.

Some examples here,

  • “I leave for a little while, and when I come back, everyone is having delusions of grandeur,” said the pilot.
  • Mamata appears to be suffering under the delusion that he is still the king.
  • “Happiness without suffering is a delusion,” preached the monk.

delusion is an idea or thing that deceives or misleads a person, especially in a negative way. A delusion is much more serious and dangerous than an illusion.

Trick to Remember the Difference

IELTS Training Classes Illusion DelusionHere is a helpful trick to remember delusion vs. illusion.

Illusion and delusion are both nouns, and their meanings overlap significantly.

In the context of a hallucinationillusion is the better choice. Illusion is also better for a trick of the senses. For example, magicians perform illusions.

For a dangerously deceptive idea, choose delusion instead. Since delusion and dangerous both begin with the letter D, you should have little trouble remembering that these contexts are the ones in which you should use delusion.


Is it illusion or delusion? Both illusion and delusion are nouns.

  • An illusion is a misperception resulting from a trick of the senses, or something that is not as it appears.
  • hallucination is one type of illusion.
  • delusion refers to a dangerously deceptive idea.

Generally, delusion is only used in contexts that involve a dangerous idea. Since delusion and dangerous both begin with the same letter, this usage should be simple to remember.

For other contexts, illusion is a better choice.

Remember, if you get confused when choosing delusion or illusion in your writing, you can reference this site in the future.

This daily series is an effort by Sahasriya for educating students on IELTS Training classes and beyond. These vital tips ensures your IELTS Training classes are more effective with Sahasriya which is what hundreds of students benefit everyday.

About Sindhu Sriram

Sindhu SriramAn education enthusiast and a self-made entrepreneur in devising unique and simple ways to educate complex elements. An English language expert and a successful role-model for many aspiring trainers. Not only is she the brainchild to have founded Sahasriya, she is a top-notch and sought after English language professional

Leave a comment

Minimum 4 characters