oversanguine
adjective
over·san·guine
| \ ˌō-vər-ˈsaŋ-gwən
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Definition of oversanguine
: too confident or optimistic : excessively sanguine
wasn't oversanguine about their prospects for success "Fiscal experts" may not be infallible, but it is hard to believe that oversanguine revenue projections can be solely responsible for so pathetic a performance.— James Gill
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