Ambitious

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late Middle English: from Old French ambitieux or Latin ambitiosus, from ambitio (see ambition).

wiktionary

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From Middle English ambitious, from Middle French ambitieus, from Latin ambitiosus, from ambitio; see ambition. Compare with French ambitieux.

etymonline

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ambitious (adj.)

late 14c., "craving, yearning, overambitious," from Latin ambitiosus "eager for public office, eager to win favor, ingratiating," from ambitio "a going around (to solicit votes)," noun of action from past participle stem of ambire "to go around, go about," from amb- "around" (from PIE root *ambhi- "around") + ire "go" (from PIE root *ei- "to go"). Meaning "springing from ambition" is from 1751. Related: Ambitiously; ambitiousness.