adjective

tending to cause harm.

recent policies have been detrimental to the interests of many old people

harmful,damaging,injurious,hurtful,inimical,deleterious,dangerous,destructive,ruinous,calamitous,disastrous,pernicious,environmentally unfriendly,ill,bad,evil,baleful,malign,corrupting,malignant,adverse,undesirable,prejudicial,unfavourable,unfortunate,counterproductive,unhealthy,unwholesome,poisonous,cancerous,noxious,deadly,lethal,fatal,malefic,maleficent,prejudicious