The Swedish term "opassande, otillbörlig, oegentlig" matches the English term "improper"

other swedish words that include "opassande" : english :
missklädsam, opassande unbecoming
ful, opassande unseemly
other swedish words that include "otillbörlig" : english :
obefogad, otillbörlig undue
other swedish words that include "oegentlig" : english :
oegentlighet impropriety