They were sanguine about the company's prospects.

Mary, is there a legal term defined as 'Per translationem culpa posito sanguine'?" "No, Tom, you just made that up." "Mary, you're under arrest for the murder of Richard Britteridge." "Do you mean one of the original Mayflower passengers?" "Where were you on the night of Wednesday, December 20th, 1620?"

I am not sanguine that the negotiations will succeed.