treacherous

Treacherous is a related term of underhand.

As adjectives the difference between treacherous and underhand

is that treacherous is exhibiting treachery while underhand is secret; clandestine.

As an adverb underhand is

with an underhand movement.

As an adjective treacherous

is exhibiting treachery.

As a noun perfidy is

a state or act of violating faith or allegiance; violation of a promise or vow, or of trust reposed; faithlessness; treachery.

Treacherous is a related term of dishonourable.

As adjectives the difference between treacherous and dishonourable

is that treacherous is exhibiting treachery while dishonourable is .

Treacherous is a related term of spurious.

As adjectives the difference between treacherous and spurious

is that treacherous is exhibiting treachery while spurious is false, not authentic, not genuine.

As adjectives the difference between fraudulent and treacherous

is that fraudulent is dishonest; based on fraud or deception while treacherous is exhibiting treachery.

Treacherous is a related term of cheating.

As adjectives the difference between treacherous and cheating

is that treacherous is exhibiting treachery while cheating is unsporting or underhand.

As a verb cheating is

.

As a noun cheating is

an act of deception, fraud, trickery, imposture, or imposition.

As an adjective treacherous is

exhibiting treachery.

Treacherous is a related term of counterfeit.

As adjectives the difference between treacherous and counterfeit

is that treacherous is exhibiting treachery while counterfeit is false, especially of money; intended to deceive or carry appearance of being genuine.

As a noun counterfeit is

a non-genuine article; a fake.

As a verb counterfeit is

to falsely produce what appears to be official or valid; to produce a forged copy of.

Dishonest is a related term of treacherous.

As adjectives the difference between dishonest and treacherous

is that dishonest is not honest while treacherous is exhibiting treachery.

As adjectives the difference between deceptive and treacherous

is that deceptive is misleading, likely or attempting to deceive while treacherous is exhibiting treachery.