Sanguine is an adjective that means cheerfully optimistic. It can also be an adjective that means consisting of or related to blood or a noun that refers to a moderate to strong red.
The Latin word for blood is sanguis (SAN gwis). From this we get the meaning of ‘blood red’ or ‘related to blood’ as well as our word of the day’s other meaning ‘marked by eager hopefulness.’
In spite of the early results of polling, we remained sanguine about our candidate’s chances. Last year’s election gave us plenty of reason to feel upbeat.