Hmmm. Have just tried it for myself with "simulacrum" and I can't say I'm over-impressed at its definition nor its synonyms starting with "Prospero" and ending with "wise". But it's like all of these things -- they are good servants but poor masters. It's important to check usage and definitions of words which are unfamiliar, and perhaps to use another dictionary as well. But the more word banks we have the better, I say, so thanks for bringing it up.
I'll be playing around with it a little more later on, but in the meantime I think this is more a writing resource than a workshop matter, so I'll move it over.