sanguinismn.
/ˈsaŋɡwɪnɪz(ə)m/ rare.
Sanguineness of temperament.
ΘΚΠ
the mind > mental capacity > expectation > hope > [noun] > state of
hopefulness1628
sanguinity1736
sanguineness1832
sanguinism1897
1897 Times (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).
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n.1897