I hate to burst your fixed idea that Tomasky surely comes from a long line of elitists.
We must judge the fixed idea not in itself but by its effects.
His uncle was engaged in the unaware execution of some fixed idea.
But, all through, the other thing really mastered her: the fixed idea that Jim must be saved.
What could words do to her, for good or evil in the face of her fixed idea?
He is possessed by a fixed idea, and imagines that it is this fixed idea which has preyed upon him and broken him down.
They had the fixed idea that they wanted to give one another up.
The Islands are not a good place for one to brood upon a fixed idea.
It was perhaps a fixed idea with him that he would win you, and others misread it.
One of its principal signs was the fixed idea as to Midsummer Day.
fixed idea n.
An often unreasonable idea or feeling that persists despite evidence to the contrary or efforts to ignore it; an obsession. Also called idée fixe.