For fruit:
* Unripe: This is the most common and direct opposite, indicating that the fruit is not yet mature.
* Green: This is often used specifically for fruit, implying that it is not yet ripe and may even be sour.
* Immature: This is a more general term that can be used for any fruit that has not reached its full potential.
For other contexts:
* Unready: This can be used when talking about something that is not yet prepared or developed.
* Immature: This can be used to describe someone who is not fully grown or developed, especially in terms of their emotional maturity.
* Raw: This can be used to describe something that is not cooked or processed.
To choose the best opposite, consider the specific context of the word "ripe."