MyVocabulary.com offers 14 PREFIX puzzles with the grade level of each word marked to the right of the word beginning with a prefix. Use eight grade level words for each prefix." DE " prefix words: Dedication - 7, Deficiency - 8, Delegation - 8, Deliberate - 6, Delusion - 7, Desolate - 7, Destination - 6, Destructive - 8