I got up the following lists of spelling words that come from Latin roots. Hope they will be a help to someone. You can search them by title, or feel free to see them all at once by searching via my name: Kerry Jones

Latin Root Spelling Lists:
Knowledge Words (-ology)
More Knowledge Words (-ology)
Order (ord-)
Carry (port-)
Writing (scribe-) (-scrip)
Send (mit-) (miss-)
To Hold (ten-) (-tain)
To Hear (audi-)
Head (-cap)
Heart (-cor)
Say (dic-)
Lead (-duc)
Even, Just (equ-)
End (-fin)
Pour, Melt (-fus)
Birth, Race (gen-)
Water (hydr-)
Hand (-man)
Send (-mit)
Born (nat-)
Rule, Guide (reg-)
Turn (-vert)
Break (-rupt)
Companion (soc-)
Hold (-tain)
Pull, Drag (-tract)
One (uni-)
Strong (-val)
Come (-ven)
Call (-voc)

Great idea, thanks!