General Antonyms:
* Rise: This is a general opposite of "drop" when referring to movement.
* Increase: This is used when talking about quantities or levels.
* Pick up: This implies a change in direction or an improvement.
* Raise: This is similar to "rise" and "increase" but is often used for a specific action.
* Ascend: This is a more formal word for "rise".
Contextual Antonyms:
* Keep: If "drop" means to let go, "keep" is the opposite.
* Retain: Similar to "keep," but suggests holding on to something.
* Hold: This could be the opposite of "drop" when referring to physical objects.
* Add: If "drop" refers to decreasing something, "add" is the opposite.
* Promote: If "drop" refers to lowering something, "promote" could be the opposite.
Example:
* Drop: "The temperature dropped below freezing."
* Rise: "The temperature rose to 70 degrees."
Please provide more context for a more specific answer.