insidious

As a verb deceiving

is present participle of lang=en.

As a noun deceiving

is deception.

As an adjective insidious is

producing harm in a stealthy, often gradual, manner.

Insidious is a related term of conniving.

As adjectives the difference between insidious and conniving

is that insidious is producing harm in a stealthy, often gradual, manner while conniving is that connives; conspiratorial.

As a verb conniving is

.

As a noun chicanery

is deception by use of trickery, quibbling, or subterfuge.

As an adjective insidious is

producing harm in a stealthy, often gradual, manner.

As a noun artifice

is craftsman, artificer.

As an adjective insidious is

producing harm in a stealthy, often gradual, manner.

Foxy is a synonym of insidious.

As adjectives the difference between foxy and insidious

is that foxy is having the qualities of a fox while insidious is producing harm in a stealthy, often gradual, manner.

Insidious is a related term of designing.

As adjectives the difference between insidious and designing

is that insidious is producing harm in a stealthy, often gradual, manner while designing is artful; scheming.

As a verb designing is

.

As a noun designing is

a process of design.

As a noun guile

is astuteness often marked by a certain sense of cunning or artful deception.

As a verb guile

is to deceive, to beguile.

As an adjective insidious is

producing harm in a stealthy, often gradual, manner.

Shifty is a related term of insidious.

As adjectives the difference between shifty and insidious

is that shifty is having the appearance of someone dishonest, criminal or unreliable; such as someone with shifty eyes while insidious is producing harm in a stealthy, often gradual, manner.

Guileful is a related term of insidious.

As adjectives the difference between guileful and insidious

is that guileful is full of guile; treacherously deceptive while insidious is producing harm in a stealthy, often gradual, manner.