Abominable

1. Worthy of, or causing, abhorrence, as a thing of evil omen; odious in the utmost degree; very hateful; detestable; loathsome; execrable.
2. Excessive; large; -- used as an intensive.

Juliana Berners . . . informs us that in her time [15th c.], “abomynable syght of monkes” was elegant English for “a large company of friars.”