I came up with three random words: intrepid, impetigo, orwellian. I got definitions for the first two but not for the third. Where is the boundary? I can see that you can't have _every_ English word.
Hi! from what I can tell, the data for the API I used was mostly taken from wiktionary. However since "orwellian" has an entry Wiktionary, i think the API must be somewhat out of date.
