A strong desire to achieve something great, often with a neutral or positive connotation. Can also imply a self-centered drive depending on context.
He had the ambition to become a politician from a young age.
Her aspiration is to start her own company.
sinister designs; treacherous intent
Used when ambition is seen as scheming, underhanded, or aimed at seizing power unethically. Often appears in historical or dramatic contexts.
The warlord harbored treacherous designs to take over the country.
It seems there is some sinister intent hidden behind his actions.
He had harbored great ambitions since he was young.
She is burning with ambition to become president of the company.
He worked hard and finally realized his ambition.
The general concealed his ambitions and pretended to be a loyal subject.
He finally showed his true ambitions and tried to seize power.