A good website for building vocabulary

http://www.vocabulary.com/

I learned 3 roots and 12 related words today.
1) NAT = be born;
unnatural, nativity, good-natured, international
2) TRACT = pull, draw;
contract, retraction, attractive, portrait
3) SEQU/SECU = follow
consequence, subsequent, executive, pursuit

Not long after the NATIVITY of Brian, his parents understood that he was a GOOD-NATURED baby. He was such an ATTRACTIVE child that his grandparents wanted a PORTRAIT of him. They finally signed a CONTRACT with an artist in their PURSUIT of a good likeness. As a CONSEQUENCE of their demands, the artist made a RETRACTION of the proposal because he disliked their specific requests. In SUBSEQUENT discussions of the artists UNNATURAL response, Brians grandfather, an EXECUTIVE with an INTERNATIONAL reputation, chose another painter for the PORTRAIT.