The Swedish term "ofelbar, oklanderlig" matches the English term "impecable"

other swedish words that include "ofelbar" : english :
ofelbarhet infallibility
ofelbar, osviklig infallible
ofelbar never-falling
other swedish words that include "oklanderlig" : english :
oklanderlig impeccable
oklanderlig, oförvitlig irreproachable
oklanderligt irreproachably