B2having a strong wish to be successful, powerful, or rich: an ambitious young lawyerHe's very ambitious for his children (= he wants them to be successful).Wanting thingsHoping and hopefulnessB2If a plan or idea is ambitious, it needs a great amount of skill and effort to be successful or be achieved: She has some ambitious plans for her business.The government has announced an ambitious plan to modernize the railway network.The original completion date was over-ambitious, so we have had to delay the opening.Complicated and difficult to doDifficult to understandambitiously
/-li/adverbComplicated and difficult to doDifficult to understand