There is one word in the Muslim language with a double letter J and it is the word, hajj. Hajj refers to the largest annual pilgrimage to Mecca, Saudi Arabia.
hajj hajji hajjis hajjs
No, never.
Jumunji?
Words with double t's:atticattachattainattireattitudebatterybettingbrittlebarrettebuttressbetterbitterbottlebutterbuttonblottercattlecassettecommitteecluttercottoncuttingdittodiskettedinetteetiquetteflutterfritterfatterfetteredfittedglittergutterhitterhotterjitterykettleknittedknottedlittlelotterylettermattermattednettedotterpatternpattypattedpottingpotteryputterpettedrattlesettlestutterspattersputterspittingsplittingspottedswattedslottedscattertattleutterlyvettedwittedkittenlitterbatteredpatternsbetterbottompermitted
Jupiter
Jupiter
banjoblackjackbluejayobjectobjectivesubject
YESSS
you
There are no English words that meet the criteria. However, if you double the J and U you can make juju.
I know of "hajj," a pilgrimage to Mecca, and "hajji," someone who has made a pilgrimage to Mecca. In Croatian, there r 2 words - najjači [nayyatchi] (the strongest) and najjednostavniji [nayyednostavniyi] (the simplest)
aardvark