Adjective

(en adjective)

Too implausible to be credible; beyond belief; unbelievable.

* 1980 September 16, (w), quoted in William A. Schwartz et al., The Nuclear Seduction: Why the Arms Race Doesn’t Matter—And What Does , University of California Press (1990, 1993), ISBN 0-520-06134-9, page 29:

I get lost in what is credible and not credible. This whole thing gets so incredible when you consider wiping out whole nations, it is difficult to establish credibility.

* 2009 , (Diarmaid MacCulloch), A History of Christianity , Penguin 2010, page 796:

He therefore found revealed religion incredible in a literal sense, and, as Bayle had done before him, he radically separated morality from the practice of organized religion.

Amazing; astonishing; awe-inspiring.

He was so wrapped up in watching the incredible special effects that he couldn't keep track of the story.

Marvelous; profoundly affecting; wonderful.

I had such an incredible slice of pizza last night that I simply can't think about anything else.

Adjective

(en adjective)

Not expected, anticipated or foreseen.

* , title=The Mirror and the Lamp

, chapter=2 citation , passage=She was a fat, round little woman, richly apparelled in velvet and lace, […]; and the way she laughed, cackling like a hen, the way she talked to the waiters and the maid, […]—all these unexpected phenomena impelled one to hysterical mirth, and made one class her with such immortally ludicrous types as Ally Sloper, the Widow Twankey, or Miss Moucher.}}

*

The windmill presented unexpected difficulties.