1. Not, Opposite of: This is the most common meaning of "in-". It indicates the negation or opposite of the word it's attached to.
* Example: "Inaccurate" means "not accurate".
* Other examples: "inactive", "incapable", "invisible", "incomplete"
2. Into, Inside: In some cases, "in-" indicates movement or location within something.
* Example: "Inhale" means "to breathe in".
* Other examples: "insert", "incorporate", "infiltrate"
3. Emphasis: Occasionally, "in-" serves to emphasize the word it's attached to.
* Example: "Indeed" means "truly" or "really".
* Other examples: "inquire", "infamous"
4. Change of State: "In-" can also indicate a change of state, often from one state to another.
* Example: "Inflame" means "to set on fire".
* Other examples: "infuse", "inscribe"
It's important to note that "in-" can sometimes be confused with "un-", which also often indicates negation. The choice between "in-" and "un-" can be subtle and sometimes depends on the specific word.
To understand the meaning of "in-" in a particular word, it's usually best to consider the context and the meaning of the word as a whole.