The phrase "utter delusion" is correct and usable in written English.
It can be used to describe a belief or perception that is completely false or irrational.
Example: "His claim that he can fly without any assistance is nothing more than utter delusion."
Alternatives: "sheer delusion" or "complete delusion."
-- on the perfect delusion.
But once Kircher settles in Rome, Mr. Glassie devotes most of his energy to whacking through the thickets of his scholarly writings, situating them against the high intellectual politics of the day while pausing to admire their frequent outcroppings of self-delusion and utter bogosity.
It was a bit like watching a drunk sobering up and recognising dimly through the dispersing veils of self-delusion what an utter jerk he has, always, been.
The spectacle of blazing fame and self-delusion, the joy of people talking utter rubbish, and writing rude reviews: the freak show goes on.
Gray writes that "the US resembles Latin America some decades ago", a fact I am unable to "comprehend", mired in my "Americo-centric" delusions; more accurately, because it is utter nonsense.
This ability allows Cortana to learn and adapt beyond her basic parameters, but at the cost of a limited "lifespan" of only seven years; eventually, she will fall to rampancy, a terminal state of being for Artificial intelligence constructs, in which the AI "develops delusions of godlike power", as well as utter contempt for its mentally inferior makers.
Truer words about Tuesday's election could not be uttered, but supporters of the Vermont senator running against Hillary Clinton persist in the delusion that their candidate is more electable than Clinton against Donald Trump and has a real chance at winning the Democratic Party's nomination.
Many will agree with Richard Dawkins, who wrote in The God Delusion that "only religious faith is a strong enough force to motivate such utter madness in otherwise sane and decent people".
