environmentally unfriendly

detrimental

ˌdɛtrɪˈmɛnt(ə)l

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

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destructive

dɪˈstrʌktɪv

adjective

causing great and irreparable damage.

the destructive power of weapons

devastating,ruinous,disastrous,catastrophic,calamitous,cataclysmic,pernicious,noxious,environmentally unfriendly,harmful,damaging,injurious,hurtful,wounding,violent,detrimental,deleterious,disadvantageous,ravaging,crippling,savage,fierce,brutal,dangerous,fatal,deadly,lethal,death-dealing

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corrosive

kəˈrəʊsɪv

adjective

tending to cause corrosion.

the corrosive effects of salt water

caustic,corroding,eroding,erosive,abrasive,biting,mordant,burning,stinging,acid,alkali,destructive,damaging,harmful,harsh,environmentally unfriendly,consumptive

noun

a corrosive substance.

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