Unscramble Isthdref

What is the meaning of word isthdref unscrambled?

What 8 letter words can be made from letters I S T H D R E F:

1. redshift - Definition of redshift

Make more words by adding or removing letters

How many 7 letter words can you make from letters I S T H D R E F?

1. dithers - Definition of dithers

2. redfish - Definition of redfish

3. shifted - Definition of shifted

4. shifter - Definition of shifter

Which 7 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter I and unscrambling sthdref
2) Removing the letter S and unscrambling ithdref
3) Removing the letter T and unscrambling ishdref
4) Removing the letter H and unscrambling istdref
5) Removing the letter D and unscrambling isthref
6) Removing the letter R and unscrambling isthdef
7) Removing the letter E and unscrambling isthdrf
8) Removing the letter F and unscrambling isthdre

More anagrams containing the letters I S T H D R E F
isthdrfe isthedfr diethfsr iershtfd