Meaning : In a harmfully insidious manner.
Example :
These drugs act insidiously.
Synonyms : insidiously
Meaning : In a noxiously baneful way.
Example :
This banefully poisoned climate.
Synonyms : banefully
Perniciously ka meaning, vilom shabd, paryayvachi aur samanarthi shabd in Marathi. Perniciously ka matlab kya hota hai?