pernicious

Pernicious is a related term of dreadful.

As adjectives the difference between pernicious and dreadful

is that pernicious is causing much harm in a subtle way while dreadful is causing dread; very bad.

As a noun dreadful is

a shocking or sensational crime.

Pernicious is a related term of unfortunate.

As adjectives the difference between pernicious and unfortunate

is that pernicious is causing much harm in a subtle way while unfortunate is not favored by fortune.

As a noun unfortunate is

an unlucky person.

As an adjective pernicious is

causing much harm in a subtle way.

Pernicious is a related term of threatening.

As adjectives the difference between pernicious and threatening

is that pernicious is causing much harm in a subtle way while threatening is presenting a threat; menacing; frightening.

As a verb threatening is

.

As a noun threatening is

an act of threatening; a threat.

Secretive is a related term of pernicious.

As adjectives the difference between secretive and pernicious

is that secretive is having an inclination to secrecy while pernicious is causing much harm in a subtle way.

Injurious is a related term of pernicious.

As adjectives the difference between injurious and pernicious

is that injurious is causing physical harm or injury; harmful while pernicious is causing much harm in a subtle way.

Pernicious is a related term of unlucky.

As adjectives the difference between pernicious and unlucky

is that pernicious is causing much harm in a subtle way while unlucky is unfortunate, marked by misfortune.

Concealed is a related term of pernicious.

As a verb concealed

is (conceal).

As an adjective pernicious is

causing much harm in a subtle way.

As adjectives the difference between pernicious and corrosive

is that pernicious is causing much harm in a subtle way while corrosive is eating away; having the power of gradually wearing, hanging, or destroying the texture or substance of a body; as the corrosive action of an acid.

As a noun corrosive is

that which has the quality of eating or wearing away gradually.

Pernicious is a related term of blighting.

As an adjective pernicious

is causing much harm in a subtle way.

As a verb blighting is

.

As a noun blighting is

the act by which something is blighted.