Unscramble Usingdef

What is the meaning of word usingdef unscrambled?

What 8 letter words can be made from letters U S I N G D E F:

1. defusing - Definition of defusing

Make more words by adding or removing letters

How many 7 letter words can you make from letters U S I N G D E F?

1. feuding - Definition of feuding

2. infused - Definition of infused

3. sueding - Definition of sueding

Which 7 letter words can be made by removing one letter and unscrambling the remaining letters?
1) Removing the letter U and unscrambling singdef
2) Removing the letter S and unscrambling uingdef
3) Removing the letter I and unscrambling usngdef
4) Removing the letter N and unscrambling usigdef
5) Removing the letter G and unscrambling usindef
6) Removing the letter D and unscrambling usingef
7) Removing the letter E and unscrambling usingdf
8) Removing the letter F and unscrambling usingde

More anagrams containing the letters U S I N G D E F
usingdfe usingedf esidunfg enfiugds