pernicious

Disguised is a related term of pernicious.

As a verb disguised

is (disguise).

As an adjective pernicious is

causing much harm in a subtle way.

As adjectives the difference between pernicious and lethal

is that pernicious is causing much harm in a subtle way while lethal is deadly; mortal; fatal.

As a noun lethal is

one of the higher alcohols of the paraffine series obtained from spermaceti as a white crystalline solid.

Pernicious is a related term of ominous.

As adjectives the difference between pernicious and ominous

is that pernicious is causing much harm in a subtle way while ominous is of or pertaining to an omen or to omens; being or exhibiting an omen; significant.

As adjectives the difference between pernicious and sinister

is that pernicious is causing much harm in a subtle way while sinister is inauspicious, ominous, unlucky, illegitimate (as in bar sinister).

Pernicious is a related term of black.

As an adjective pernicious

is causing much harm in a subtle way.

As a proper noun black is

.

Bad is a related term of pernicious.

As a verb bad

is to simulate.

As an adjective pernicious is

causing much harm in a subtle way.

As a verb sneaking

is present participle of lang=en.

As a noun sneaking

is the act of one who sneaks.

As an adjective pernicious is

causing much harm in a subtle way.

As adjectives the difference between surreptitious and pernicious

is that surreptitious is stealthy, furtive, well hidden, covert (especially movements) while pernicious is causing much harm in a subtle way.

As adjectives the difference between pernicious and disastrous

is that pernicious is causing much harm in a subtle way while disastrous is of the nature of a disaster; calamitous.

Unhealthy is a related term of pernicious.

As adjectives the difference between unhealthy and pernicious

is that unhealthy is characterized by, or conducive to poor health while pernicious is causing much harm in a subtle way.