fantastic notion

He has most viciously corrupted you into the fantastic notion that you are of gentle and fortunate birth.

Even the Count du Moncel, who was ever ready to welcome a promising invention, evidently regarded it as a fantastic notion.

Still the fantastic notion that, all unwittingly, he had been guilty of doing Honoria some strange injury, clung to him.

Every minute I had some fantastic notion that made them laugh till they cried; I was a whole Bedlam in myself.

Be that as it may, he was so disconcerted by the mere allusion to Angèle that a fantastic notion gripped Martin.