Does anyone know of where I can get free dictionary data (word definitions, pronunciations, synonyms, antonyms, etc) that I can use for a software program I am making that includes a fully functional on-board dictionary?
I came across the Princeton Wordnet dictionary data that is used by several popular apps, and while I have found the definitions adequate, they are not necessarily comprehensive enough or ideal for graduate studies.
Alternatively, are there any other relatively inexpensive licenses for this type of data? I can probably pay up to $10,000 for a developers license.
Thanks in advance for any help you might be able to offer.