optimista
/obtiˈmista/ · B2 · adj
optimistic, upbeat
😄☀️ op-TIM-ista = 'optimum' + -ista: someone who expects the optimum (best) outcome
Spanish optimista comes from the same Latin root as English optimum, meaning best. Add the -ista suffix (a person who holds a view) and you get someone who expects the best. Spanish b in /obtimista/ is just a softer sound; the English cognate is optimist.