I. adjective 1. having or showing a strong desire and determination to succeed • a ruthlessly ambitious woman.
2. (of a plan or piece of work) intended to satisfy high aspirations and therefore difficult to achieve • an ambitious enterprise.
II. derivatives 1. ambitiously /amˈbɪʃəsli / adverb
2. ambitiousness /amˈbɪʃəsnəs / noun
– origin late Middle English: from Old French ambitieux or Latin ambitiosus, from ambitio (see ambition).