Invulnerable

google

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late 16th century (earlier than vulnerable ): from Latin invulnerabilis, from in- ‘not’ + vulnerabilis (see vulnerable).

wiktionary

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From Middle French invulnérable, from Latin invulnerābilis, from vulnerābilis, from vulnerō(“I wound”), from vulnus(“wound”).

etymonline

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invulnerable (adj.)

1590s, from Latin invulnerabilis "invulnerable," from in- "not" (see in- (1)) + vulnerabilis (see vulnerable). Related: Invulnerably.