What is the English derivative for mother?

There isn't a direct English derivative for "mother" in the sense of a word specifically derived from it.

However, "mother" itself is the root word for many other English words, including:

* Maternal: Relating to a mother or motherhood.

* Mater: A formal term for a mother, used in some scientific and medical contexts.

* Matriarch: A female head of a family or tribe.

* Matrilineal: Relating to or based on descent through the female line.

* Matrimony: Marriage.

It's worth noting that these words are related to "mother" through shared etymology, but they don't necessarily carry the same exact meaning.