day 6 list

1 psychological   psychology  psychologist   

2 purchase 

3 quantity   quantify   quantitative 

4 questionnaire    formulate( devise , draw up) a questionnaire on something

5 random   randomly 

6 recommend    recommend doing something    recommend somebody to do something     recommendation

7 register     registrar  registration registered 

8 regulate regulation 

9 remedy

10 remedial 

11 removal   remove

12 renaissance 

13 rental rent

14 repeat   repetition repeatedly repetitive 

15 replace   replacement replaceable   replace with/by

16 replicate  replication

17 represent  representation representative   stand for describe portray  explain illustrate show play 

18 reserve    reserve for  without reserve    in reserve   reservation    reserved

19 residence reside resident   residential 

20 resolve   resolve to do     be resolved to do    resolution   resolute    

21 restrict    restriction    restrictive 

22 reveal   revelation revealing

23 rival enemy  competitor opponent  challenger compete contest equal 

24 route  way road path course

25 royal    imperial   princely kingly stately splendid

26 schedule scheduled       on schedule    timetable    agenda plan book  arrange  program

27 scheme  plan   design   program  project plot conspiracy devise