sanguinismn.

/ˈsaŋɡwɪnɪz(ə)m/Etymology: < sanguine adj. + -ism suffix.
rare.
the mind > mental capacity > expectation > hope > [noun] > state of
1897 (Weekly ed.) 5 Oct. 656/2 The mingled insouciance and sanguinism of that fair-haired adventuress.
This entry has not yet been fully updated (first published 1909; most recently modified version published online March 2018).