General opposites:
* Content: Someone who is content with their life and doesn't strive for more.
* Unmotivated: Someone who lacks drive and doesn't have any goals.
* Satisfied: Someone who is happy with what they have and doesn't feel the need for more.
* Indifferent: Someone who doesn't care about achieving things or making progress.
Specific opposites focusing on different aspects of ambition:
* Unrealistic: If "ambicioso" refers to having overly ambitious goals, the opposite could be realistic or grounded.
* Selfish: If "ambicioso" implies ambition driven by personal gain, the opposite could be generous or altruistic.
* Greedy: If "ambicioso" suggests a desire for power or wealth, the opposite could be humble or contented.
* Uncompromising: If "ambicioso" implies a relentless pursuit of goals, the opposite could be flexible or compromising.
Ultimately, the best opposite of "ambicioso" will depend on the specific context and the nuances of the word's meaning in that situation.