After trying some of the free online English-English dictionaries on the net I’ve concluded that the one I like best is Free Dictionary. Maybe because you can hear many words in a ‘real’ (?) voice recording, an excellent feature for all of us who want to know how useful words like armamentarium and anthropomorphize are pronounced in standard American English. (But why not Australian or Scottish voices? I would have loved to hear some Sean Connery-sound-alike pronounce ‘armamentarium’.) Has anybody found another good English-English dictionary?