Words removed by Harper Collins:

* Abstergent - Cleansing.
* Agrestic - Rural.
* Apodeictic - Unquestionably true by virtue of demonstration.
* Caducity - Perishableness.
* Caliginosity - Dimness.
* Compossible - Possible in coexistence with something else.
* Embrangle - To confuse.
* Exuviate - To shed.
* Fatidical - Prophetic.
* Fubsy - Squat.
* Griseous - Somewhat grey.
* Malison - A curse.
* Mansuetude - Gentleness.
* Muliebrity - The condition of being a woman.
* Niddering - Cowardly.
* Nitid - Bright.
* Olid - Foul-smelling.
* Oppugnant - Combative.
* Periapt - An amulet.
* Recrement - Refuse.
* Roborant - Tending to fortify.
* Skirr - A whirring sound, as of the wings of birds in flight.
* Vaticinate - Prophesy.
* Vilipend - To treat with contempt.

Now, I do honestly admit to not using most of these with any regularity save for agrestic and embrangle, but I feel their removal from the dictionary will result in less people being able to read, enjoy, and understand early to middle English literature without destroying the flow of the original text and substituting less difficult words that, in essence, furthers the dumbing down of the general populace.