be under illusion vs have illusion

The correct phrase is "be under illusion." This phrase is commonly used to indicate that someone is mistaken or deceived. On the other hand, "have illusion" is not a standard English expression.

Last updated: April 04, 2024 • 218 views

This phrase is correct and commonly used in English.

"be under illusion"

This phrase is used to convey that someone is mistaken or deceived about something.

Examples:

Don't be under the illusion that everything will be easy.
She was under the illusion that he would change his mind.
Many people are under the illusion that success comes overnight.
He is under the illusion that he can solve the problem on his own.
They were under the illusion that the project would be completed in a week.

Show examples from the web [+]

And nobody in this room should be under any illusions on that count.
You must be under an illusion spell.
No one should be under any illusions as regards the discussions over the Intergovernmental Conference.
Mr President, we must be under no illusions.
Let us not be under any illusions about that.
However, we should not be under any illusions here.
Workers cannot and must not be under any illusions here.
But one should be under no illusion about the limits of political emancipation.
We should be no under illusions, however: the method by which these summits are organised is now in crisis.
Be under no illusion, this prison is Mugabe's most secure facility and Masuku will be under close watch.
You appear to be under the illusion that this is a is not.
Ladies, none of us should be under any illusion about the prospect of imminent war with Germany.
No one should be under any illusions about what we're going to face here.
But let us just get one thing clear, and let us not be under any illusion: we are not waging a cultural war here.
I very much welcome the Commission's proposals as a step in the right direction but no one in this Chamber should really be under any illusions.
Let us not be under any illusions: the EIB funds announced are, when all is said and done, negligible in the face of such issues.
We must not be under any illusions about this.
To recap, therefore: we shall support the motion, but we should be under no illusions - we have not yet achieved the decisive breakthrough.
We hope that these rules will make the lobbying firms more transparent, but let us be under no illusions.
I would not like colleagues to be under any illusions of when this will take place.

This phrase is not a standard English expression.

"have illusion"

Show examples from the web [+]

So don't have illusions about who's running this network.
People still have illusions someone's looking out for them.
At first you have illusions about how it's going to be.
We are all learners, all of us have illusions.
I really believe that the world is a hell, also considering what my eyes gave to monitor, I don't have illusions maybe only in hereafter.
Particularly in dwellings is that buyers already seeing much more clearly what's on the market and not have illusions, peculiar to the period prior to 5-6 years.
Without illusions, we live by dreaming, which is the illusion of those who can't have illusions.
Those who still have illusions that subservience will bring them comfort and shield them from dictatorship, war, famine, nuclear radiation and energy crises, are suicidal. Those who still believe in political organizations ("oppositional" or not) are naïve.
The message is clear: it is an invitation not to have illusions about married life, to consider the pleasure of life with a partner ephemeral, to expect that loves burns out quickly leaving cold ashes which passion very soon transforms into rancorous hatred.
I have no illusions about my conduct.
Have no illusions, physically you do not interest me.
I have no illusions about myself.
I have no illusions about my looks.
No, they have the illusion of choice.
No, I have no illusion that you need protecting.
I have no illusions of immortality.
I have no illusions about what he was after.
I have no illusions about what he was after.
Look, I have no illusions.
Have no illusions, we've been thirty for ages.

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be under illusion vs have illusion