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."BE" prefix words: Bedraggled - 7, Behavior - 5, Belittle - HS, Beloved - 5, Beseech - 7, Bestow - 5, Betray - 6, Bewildering - 7