I have thoroughly examined the Bond books for 9-11 year olds for difficult vocabulary words and put them into lists. It took a bit of time, so I do hope others can make use of this resource as well!
I teach many Year Five and Six students that are prepping for the 11 Plus and last year I noticed that they needed more exposure to high level vocabulary for these exams. As many of these students are strong spellers, I decided to alternate weekly spelling lists with these vocabulary lists. They practise the words with activities from my spelling menu (https://www.tes.com/teaching-resource/spelling-menu-key-stage-two-11337779) as many of the activities do not solely focus on spelling.
This is NOT for learning the spelling, but for learning meanings of words. You will need to think of another way to test students instead of the typical 'spelling test'.
Includes 16 lists (2 lists per page, organised into groups of 8). UK/AU/CAN spellings
Hope you find this resource useful! I know this has helped my students tremendously.
UPDATE: go here for 16 more lists, including lists with a focus on roots.