My dear Alneyan! There is nothing wrong with dictionary.com. I love the site myself and I get their 'Word of the Day' email. Merriam-Webster, is the best so far I have seen. Not only do they have another word of the day email. They also have some great word games as well

!*heart races at the thought* I can get to excited about words. I can see now why my friends are starting to call me "Mr.Dictionary"! Anyway, its been a while so here is today's word...
Today's word:
Plenipotentiary plen*a*po*ten*tiary
adj
1. having full power: invested with complete authority to act independently
2. conferring full power: giving the holder complete authority to act independently
n (plural plen·i·po·ten·ti·ar·ies)
official with full powers: an ambassador, envoy, or delegate invested with full authority to act or negotiate independently on behalf of a government or sovereign
[Mid-17th century. Via medieval Latin plenipotentiarius from the late Latin stem plenipotent- , literally “having full power,” from plenus “full” + potens “powerful.”]