Unscramble Onigrep

What is the meaning of word onigrep unscrambled?

What 7 letter words can be made from letters O N I G R E P:

1. perigon - Definition of perigon

2. pirogen - Definition of pirogen

Make more words by adding or removing letters

How many 6 letter words can you make from letters O N I G R E P?

1. epigon - Definition of epigon

2. eringo - Definition of eringo

3. ignore - Definition of ignore

4. Origen - Definition of Origen

5. orpine - Definition of orpine

6. pernio - Definition of pernio

7. pigeon - Definition of pigeon

8. pinger - Definition of pinger

9. poring - Definition of poring

10. Progne - Definition of Progne

11. region - Definition of region

12. roping - Definition of roping

Which 6 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter O and unscrambling nigrep
2) Removing the letter N and unscrambling oigrep
3) Removing the letter I and unscrambling ongrep
4) Removing the letter G and unscrambling onirep
5) Removing the letter R and unscrambling onigep
6) Removing the letter E and unscrambling onigrp
7) Removing the letter P and unscrambling onigre

More anagrams containing the letters O N I G R E P
onigrpe onipegr eronipg norigpe