What is Another word for mother or father adding two letters from the tear?

This is a fun word puzzle! Here's how we can solve it:

* The word "tear" has two letters: "t" and "r".

* We need to add these letters to the words "mother" and "father".

Here's the solution:

* Mother + "tr" = "matri"

* Father + "tr" = "fratri"

These words, while not common in everyday English, are related to the original words:

* Matri is a root word meaning "mother" or "female parent" (like "matriarch").

* Fratri is a root word meaning "brother" or "male sibling" (like "fraternal").

It's interesting how adding two letters can create related words!