Unfamiliar words, places, and sundry other references get added to the list with a view toward richer cultural and conversational engagement.

Recently Erased Ignorance
Ignorance Explained
1 gainsay to declare to be untrue or invalid. CONTRADICT, OPPOSE
2 simulacrum an image or representation of someone or something
3 deracinate UPROOT; to remove or separate the cultural or ethnic influences from
4 verklempt overcome with emotion
5 precipitously hastily and without careful consideration
6 panopticon a circular prison with cells arranged around a central well, from which prisoners could at all times be observed.
7 subsidence the gradual caving in or sinking of an area of land
8 nonpareil having no equal
9 obloquy strong public criticism or verbal abuse
10 fulsome characterized by abundance; generous in amount, extent, or spirit

The full list can be viewed here.

Definitions appearing on this page are generally either verbatim or derived from Merriam-Webster's College Dictionary, Tenth Edition, 1999 or its online counterpart.