YiLing Chen-Josephson wonders which dictionary is best, and designs a test. “I restricted my testing to seven of the relatively affordable and frequently updated college dictionaries (the type of dictionary used not only in the most dormitory rooms but in the most homes and offices as well). To determine my rankings, I looked up seven times over words that I knew but wanted to understand better (like regret, jealous, and overdetermined); words with disputed usages (including aggravate, disinterested, fortuitous); words with potentially interesting etymologies (e.g., chauvinism, juggernaut, lagniappe); neologisms and slang (e.g., blogger, booty, yay); anything friends had looked up recently (e.g., Panglossian, condominium, alembic); as well as the words I didn’t know in the last book I read, J.M. Coetzee’s Elizabeth Costello.”