Even if the word "pity" is in a Dalek's vocabulary banks, it may be listed as a synonym for "errorcode 7 (failure to exterminate caused by temporary targeting impairment or neural dysfunction)".
Amongst other interesting essays on Justin's site are PLEISTOCENESE A Language Of 40,000 BC; A Guide To SF CHRONOPHYSICS; and Learn Not To Speak Esperanto. And FUTURESE The American Language in 3000 AD, where Justin speculates on sound-change in English, giving the third row in the table below:
| 1000 AD: | Wé cildra biddaþ þé, éalá láréow, þæt þú taéce ús sprecan rihte, forþám ungelaérede wé sindon, and gewæmmodlíce we sprecaþ... |
| 2000 AD: | We children beg you, teacher, that you should teach us to speak correctly, because we are ignorant and we speak corruptly... |
| 3000 AD: | Zᴀ kiad w'-exùn ya tijuh, da ya-gᴀr'-eduketan zᴀ da wa-tᴀgan lidla, kaz 'ban iagnaran an wa-tᴀg kurrap... |