perniciously
In ruinous fashion
Perniciously means in a way that causes harm gradually or subtly.
The adverb carries a sense of insidious damage—harm that works quietly rather than obviously: The rumor spread perniciously through the office.
Something acting perniciously undermines or destroys in ways that may go unnoticed until serious damage is done.
In a damaging manner
- damaginglyIn an injurious manner
- ruinouslyIn a devastating manner
- deleteriouslyIn a damaging manner
- detrimentallyIn an injurious manner
injuriously · toxically · corrosively · malignantly · virulently · lethally · fatally · banefully
In furtive manner
- underhandedlyIn a dishonest way
- treacherouslyIn a betraying manner
- deceptivelyIn falsely suggestive manner
- cunninglyWith sly cleverness
slyly · craftily · stealthily · surreptitiously · covertly · furtively · subtly · imperceptibly
destructively
In a damaging manner
- damaginglyIn an injurious manner
- ruinouslyIn a devastating manner
- deleteriouslyIn a damaging manner
detrimentally · injuriously · toxically · corrosively · malignantly · virulently · lethally · fatally · banefully · noxiously
sneakily
In furtive manner
- underhandedlyIn a dishonest way
- treacherouslyIn a betraying manner
- deceptivelyIn falsely suggestive manner
cunningly · slyly · craftily · stealthily · surreptitiously · covertly · furtively · subtly · imperceptibly · gradually
perniciouslyharmlessly
Without causing damage
innocuously · benignly · safely · inoffensively · innocently
perniciouslybenevolently
In a kindhearted manner
beneficially · benignly · kindly · generously · helpfully
- pernicious anemiaIntrinsic factor deficiency disease