The Swedish term "oskadlig, menlös, ofarlig" matches the English term "harmless"

other swedish words that include "oskadlig" : english :
oskadlig inocuous
other swedish words that include "menlös" : english :
menlös, oskyldig innocent
other swedish words that include "ofarlig" : english :
kassaskåp, ofarlig, säker, riskfri safe