"most abominable" is correct and usable in written English.
You can use it to refer to a situation that is extremely abhorrent or detestable. Example sentence: The most abominable part of the genocide was the deliberate targeting of innocent people.
"Everyone, including the most abominable of human beings, has a right to life, and capital punishment is therefore unconstitutional," Justice Chaskalson wrote.
It was only much later, she writes, that technical innovations allowed photography to "define, not merely record, the most abominable realities".
Now there's a subject for Channel 4 to tackle: a full-frontal portrait of one of the 20th century's most abominable yet unknown figures.
The easy answer is the disproportion between the mountainous heights of his reputation and the fragmentary shards of his biography: the tallest mountains produce the most abominable of snowmen, Yetis crowd the slopes of Everest.
Mr. Harris, while more earnest here than he is as the ego-monster Barney in "How I Met Your Mother," still manages his trick of wrapping the most abominable behavior in the most winsomely appealing package.
Catherine Pégard, president of the Palace of Versailles, said she was "scandalised" by those who had defaced a work of art by a great international artist with "the most abominable references".
She is a wretch, abominable almost beyond conception, so as to be odious, if known, to the most odious.
Gladstone was an unprincipled maniac and honest in the most odious sense of the word, said his rival Disraeli; who in turn was called a miscreant of abominable, foul and atrocious nature by an Irish politician.
Now, we say that, morally speaking, this is most hideous and abominable".
"Frankl came to see the truth of this in the most dehumanizing and abominable of circumstances, in the hell of the Holocaust.
Though most Europeans consider his methods abominable, his anti-immigrant ideas, while extreme, are in tune with a growing current of xenophobia in Europe.
