What does the prefix in mean?
The prefix “in-” means “not.” It gives a root word the opposite meaning. For example, “inactivity” is the opposite of “activity.” Other words with the prefix “in” include “inaccurate,” “inedible,” and “incoherent” (e.g., “The rotten vegetables were totally inedible”).
Sometimes the prefix “in-” is confused with “un-” because they mean the same thing. Luckily, QuillBot’s free Grammar Checker can prevent those errors.