The letters can be used to spell the 8 letter words deviator, durative, garroted and outdared. They also spell outdrive, outraged and outrider.
centrifuge
There were 44 word found in the word EAGGRD
Codger
diegest
The longest word you can make out of those letters is "hydromagnetry," which has 13 letters.
Words that can be made with the letters 'g g n d a e' are:aadageananddeandenendgadgangnag
Ragged
The 'g' and the 'd' are silent in the word "gnawed". The 'g' is silent at the beginning of the word, and the 'd' is silent at the end.
dagger
The word is dragon.
Mad Hopping.
Age, aged, head, gem, hem, ham, dam....