Where can I find a downloadable database of English to Chinese words?
Only other two freely available that I'm aware of are Adsotrans  and LDC wordlist.

Adsotrans is based on CC-CEDICT, but they also include (for non-commercial use) software for segmentation, hanzi2pinyin and apparently some sort of semantic analysis. I don't know whether dictionary itself differs from vanilla CC-CEDICT. Their download contains SQL instead of CSV. Also, if I remember correctly they used some sort sort of Latin-whatever encoding instead UTF-8.

If you're willing to pay then most popular option seems to licence ABC dictionary, but unfortunately University of Hawaii  has granted Wenlin exclusive license so you'd have to sublicence it from them. See UH and Wenling respective pages here:
www.otted.hawaii.edu/technology/00294/abc-chinese-language-database-dictionary and www.wenlin.com/abc.htm

If you find another free or free-ish/cheap database I'd be interested too.