Which of the following is best definition for prefix in-?

The best definition for the prefix "in-" depends on the context, as it can have multiple meanings. Here are the most common ones:

1. Negation: This is the most common meaning of "in-". It indicates the opposite or absence of something.

* Examples:

* invisible (not visible)

* incorrect (not correct)

* inactive (not active)

2. Into or inwards: This meaning implies movement or direction towards the inside of something.

* Examples:

* inside (inside of something)

* insert (to put something into something else)

* inhale (to breathe air into the lungs)

3. Intensification: This meaning implies an increase or enhancement.

* Examples:

* increase (to make something bigger)

* intense (very strong)

* invest (to put money into something to make a profit)

4. Inside, within, or among: This meaning signifies a location or position.

* Examples:

* inland (within the country)

* interest (within the mind)

* include (to put something within a group)

To determine the best definition for "in-" in a specific word, consider the context and the overall meaning of the word.