Unscramble Ingproof

What is the meaning of word ingproof unscrambled?

What 8 letter words can be made from letters I N G P R O O F:

1. proofing - Definition of proofing

Make more words by adding or removing letters

How many 7 letter words can you make from letters I N G P R O O F?

1. roofing - Definition of roofing

Which 7 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling ngproof
2) Removing the letter N and unscrambling igproof
3) Removing the letter G and unscrambling inproof
4) Removing the letter P and unscrambling ingroof
5) Removing the letter R and unscrambling ingpoof
6) Removing the letter O and unscrambling ingprof
7) Removing the letter O and unscrambling ingprof
8) Removing the letter F and unscrambling ingproo

More anagrams containing the letters I N G P R O O F
ingrfoop ingrfopo gionfopr ionfprog