Unscramble Intrref

What is the meaning of word intrref unscrambled?

What 7 letter words can be made from letters I N T R R E F:

Make more words by adding or removing letters

How many 6 letter words can you make from letters I N T R R E F?

1. Fenrir - Definition of Fenrir

Which 6 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling ntrref
2) Removing the letter N and unscrambling itrref
3) Removing the letter T and unscrambling inrref
4) Removing the letter R and unscrambling intref
5) Removing the letter R and unscrambling intref
6) Removing the letter E and unscrambling intrrf
7) Removing the letter F and unscrambling intrre

More anagrams containing the letters I N T R R E F
intrrfe irefnrt terirnf errtifn