jambeaux - leg armour of the middle-ages Janitrix - the feminine form of janitor, springs instantly to mind.
Jubilant, juncture, juvenile, jingoism, jaundice, jackboot, Jacobean, Jacobite...
Juxtapose
Jinx
jukebox, jackbox, jambeux
washtubwebwomb
every
proteinpertainpontoon
List of words of the form P*****A include: Panacea Pangaea Prussia Proxima
There are no English language 6 letter words that begin with the letter i and end with the letter j.
To list a few: Gang. Growing. Gnawing. Going. Grouping.
ode owe once ogre
tenet, tacit, treat, trout, taint
The wod is list.
slopslurpstopstumpstepstoopslapstompshopshipsipsnapsapsleepsloopsupsoapslipskipsoupstamp
silent letters
dynamo, duo