* under-: This is a prefix meaning "below" or "beneath".
* neath: This is the root word, meaning "beneath".
* -: This is the zero morpheme, which indicates the end of the word.
Therefore, "underneath" can be broken down into "under" + "neath" + " ".
* under-: This is a prefix meaning "below" or "beneath".
* neath: This is the root word, meaning "beneath".
* -: This is the zero morpheme, which indicates the end of the word.
Therefore, "underneath" can be broken down into "under" + "neath" + " ".