préjudiciable signifie anglais

harmful▼◼◼◼(likely to be damaging)
adjective
[UK: ˈhɑːm.fəl] [US: ˈhɑːrm.fəl]

prejudicial▼◼◼◼(causing harm or injury; detrimental, harmful or injurious)
adjective
[UK: ˌpre.dʒʊ.ˈdɪʃ.l̩] [US: ˌpre.dʒə.ˈdəʃ.l̩]