Chimerical - Things Learned while reading "The Hound of the Baskervilles" - Sherlock Holmes

"It was at my advice that Sir Charles was about to go to London. His heart was, I knew, affected, and the constant anxiety in which he lived, however chimerical the cause of it might be, was evidently having a serious effect upon his health.

chi·mer·i·cal

   [ki-mer-i-kuhl, -meer-, kahy-]  Show IPA

–adjective

1.

unreal; imaginary; visionary: a chimerical terrestrial paradise.

2.

wildly fanciful; highly unrealistic: a chimerical plan.

Chimerical | Define Chimerical at Dictionary.com: "chimerical"