What words that are like child in plural form?

You're asking for words that have a plural form similar to "children". This means we're looking for words that have an irregular plural, not just adding an "s" or "es". Here are some examples:

* Oxen: The plural of "ox"

* Brethren: An archaic term for brothers, often used in religious contexts.

* Women: The plural of "woman"

* Teeth: The plural of "tooth"

* Feet: The plural of "foot"

* Mice: The plural of "mouse"

* Geese: The plural of "goose"

These words, like "children," change their form completely to become plural.

Let me know if you'd like more examples!