Download Complete Words chrome extension. Complete middle and high school spelling words, for 7 grades: 6, 7, 8, 9, 10, 11, and 12. and install in your Google chrome browser. This is Direct Complete Words Crx download for Chrome it is also called Complete Words offline CRX for chrome Download. This Complete Words is used to Complete middle and high school spelling words, for 7 grades: 6, 7, 8, 9, 10, 11, and 12.