harmless /ˈhɑrm.ləs/ /ˈhɑːmləs/
innocuous /ɪˈnɑːkjuəs/ /ɪˈnɒkjuəs/
safe /seɪf/ /seɪf/
secure /sɪˈkjʊr/ /sɪˈkjʊə/
