1. an illegal move in a sports event   foul   fowl   2. to conclude; to work out from evidence   imply   infer   3. lacking respect   irrelevant   irreverent   4. introduction to a book or work of art; preface   forward   foreword   5. an embarrassing mistake; a blunder   gaff   gaffe   6. a soldier who belongs to an underground movement   guerrilla   gorilla   7. belonging to the past   historic   historical