Allusion or Illusion?

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Allusion or Illusion?

What is the different between "allusion" and "illusion"?
  • "An allusion" is an indirect reference to something.
    • His statement was an obvious allusion to your complaint.
    • We must quote whenever we feel that the allusion is interesting, helpful, or amusing. (Author Clifton Fadiman)
  • "An illusion" is a false impression.
    • It gives the illusion of floating in space.
    • Love can be magic, but magic can just be an illusion. (Noah's grandson Javan)
allusion or illusion difference

More about "Allusion" and "Illusion"

The nouns "allusion" and "illusion" sound quite similar, and they both have connotations of intangibility. As a result, they are sometimes confused by writers.


The noun "allusion" denotes a subtle or indirect reference to something (i.e., a hint at something). It derives from the verb "to allude."

Example sentences with "allusion":
  • The Simpsons is full of allusions to well-known films.
  • His consistent allusions to being so poor as a child are not in keeping with his brother's version of their childhood.
Read also about "allude" and "elude."


"An illusion" is a false impression or deception.

Example sentences with "illusion":
  • It's not an oasis but an illusion.
  • The greatest obstacle to discovery is not ignorance - it is the illusion of knowledge. (Historian Daniel J. Boorstin)

"Under No Illusion" or "Under No Allusion"?

The term "under no illusion" or "under no illusions" means "to be fully aware of the situation." ("To be under no allusion" is wrong.)

Example sentences with "under no illusion":
  • I am under no illusion how much work is required.
  • (This means "I fully understand how much work is required.")
  • I'm under no illusion that there are things about me that I'd like to change. I just accept who I am, and I'm proud of it. (Singer Paloma Faith)
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See Also

adverse or averse? affect or effect? appraise or apprise? avenge or revenge? bare or bear? complement or compliment? dependant or dependent? discreet or discrete? disinterested or uninterested? e.g. or i.e.? envy or jealousy? imply or infer? its or it's? material or materiel? poisonous or venomous? practice or practise? principal or principle? tenant or tenet? who's or whose? What are nouns? What are verbs? List of easily confused words