What does the rootword -in mean?

The root word "-in" is actually not a stand-alone root. It usually appears as a suffix within a word, and its meaning depends on the context.

Here are some common meanings of "-in" as a suffix:

* Action or process: "train" (the action of training), "paint" (the action of painting)

* State or condition: "broken" (in a state of being broken), "hidden" (in a state of being hidden)

* Made of: "wooden" (made of wood), "golden" (made of gold)

* Having the quality of: "foolish" (having the quality of foolishness), "painful" (having the quality of pain)

* Place: "cabin" (a small, wooden house), "fountain" (a source of water)

It's important to note that the meaning of "-in" can vary depending on the word it's attached to. For example, "within" means "inside," while "thin" means "not thick."

To understand the meaning of a word ending in "-in", it's best to consider the entire word and its context.