She ambitiously pursued a plan to expand the small bookstore into a citywide chain.

His ambitiousness was obvious in the way he planned each step toward promotion.

Across the team, differing ambitiousnesses produced both bold breakthroughs and unnecessary rivalries.

The ambitious intern stayed late every night to learn from senior engineers and advance her skills.

The mayor resigned after evidence of ambiti from his campaign came to light.

Of the twins, Maya always seemed the ambitiousest, tackling challenges no one else dared to try.

Her new project sounded ambitiouser than anything she'd attempted before, but she welcomed the challenge.