Unscramble Exreg

What is the meaning of word exreg unscrambled?

What 5 letter words can be made from letters E X R E G:

1. regex - Definition of regex

Make more words by adding or removing letters

How many 4 letter words can you make from letters E X R E G?

1. eger - Definition of eger

2. gree - Definition of gree

Which 4 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter E and unscrambling xreg
2) Removing the letter X and unscrambling ereg
3) Removing the letter R and unscrambling exeg
4) Removing the letter E and unscrambling exrg
5) Removing the letter G and unscrambling exre

More anagrams containing the letters E X R E G
exrge geerx rgexe geerx