Viva

google

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Italian.

wiktionary

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Borrowed from Italian viva.

Shortened from viva voce, Latin for “live voice”

etymonline

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viva (interj.)

1640s, from Italian viva "(long) live, may he (or she) live," third person singular present subjunctive of vivere "to live," from Latin vivere "to live," from PIE root *gwei- "to live." Probably reborrowed (1836) from Spanish viva, from vivir "to live," from Latin vivere. Sometimes also in Latin form vivat (1660s).