/ æmˈbɪʃəs; NAmE / adjective
1.
determined to be successful, rich, powerful, etc. :
a fiercely ambitious young manager
They were very ambitious for their children (= they wanted them to be successful) .
2.
needing a lot of effort, money or time to succeed :
the government's ambitious plans for social reform
OPP unambitious
► am·bi·tious·ly adverb
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WORD ORIGIN
late Middle English : from Old French ambitieux or Latin ambitiosus , from ambitio , from ambire go around (canvassing for votes).