IPA: /æmˈbɪʃəsnəs/
KK: /æmˈbɪʃəsnəs/
The quality of having a strong desire to achieve success or reach a high goal.
Her ambitiousness drove her to achieve great success in her career.
Ambitiousness is formed from "ambitious" (from Latin "ambitiosus", meaning eager for favor or advancement) and "-ness" (a suffix meaning the state or quality of). The word describes the state of being eager for success or advancement.
Think of someone who is 'eager for success' — 'ambitious' means wanting to achieve, and '-ness' indicates the quality of that desire.