The phrase "ever unattainable" is correct and usable in written English
It usually refers to something which is impossible to obtain, or something that is perpetually out of the individual's reach. For example, "His dream of becoming a professional athlete seemed ever unattainable."
Barred by floating gates, the flowers are partially visible and partially obscured, partially accessible and partially not, seemingly appropriate metaphors for the "ever-unattainable dream of the middle class' comfortable life," a concept the duo actively imbues into their work.
Throughout this period, of course, television was casting out its noisy propaganda, presenting millions of viewers with ever more unattainable versions of what it means to be normal.
Fortunately, over time, I came to accept that being healthy was more important than being an unattainable, ever-changing idea of 'perfect' – and nothing about anything I had been doing was healthy.
The American-led "process" has ultimately strengthened the Israeli far right and made Palestinian self-determination more unattainable than ever.
As an old man, he is still as besotted with her as ever but she remains unattainable.
I suppose at some point I wanted to climb Mt. Everest or some other equally unattainable physical goal, but eliminated that when I learned that people died of edema.
She was in nearly every girl F. Scott Fitzgerald ever saw in moonlight: rich, beautiful, forever unattainable.
We struck money quite close to the surface, but the Eocene-that dream stratum of the journalist - shows ever sign of being at imponderable depths, unattainable.
And at first it seems to be about That Summer, the time when a shy boy develops a hopeless crush on some unattainable woman and seems unlikely ever to get over her.
