sibylline

sibylline \SIB-uh-leen\ , adjective;

1. Prophetic; oracular.
2. Of, resembling, or characteristic of a sibyl; prophetic; oracular.
3. Mysterious; cryptic.

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I thought I had seen this word used before, but had some unsettled feeling about it, something I couldn't remember why this word was disturbing. The Dictionary.com site didn't reveal any clues, so I Googled the word, accidentally spelling it wrong and using a "Y" instead of the first "I" , like the name "Sybil".

"Did you mean ...... ?" asked Google. I thought I did, then I didn't.

Sorry, no link to my mistake. Google it yourself - if you dare.

(My first impression when I saw those things was "Whoa, ride 'em cowgirl!")