pernicious
Meaning (English)
having a harmful effect, especially a gradual one
Meaning (मराठी)
हळूहळू घातक ठरणारे
Used in a sentence
The pernicious effect of chemical runoff on the river was noticed late.
रसायनमिश्रित पाण्याचा नदीवरील घातक परिणाम उशिरा लक्षात आला.