dishonest β not honest; disposed to lie, cheat, or steal; not worthy of trust or belief: a dishonest person.
insincere β not sincere; not honest in the expression of actual feeling; hypocritical.
artful β If you describe someone as artful, you mean that they are clever and skilful at achieving what they want, especially by deceiving people.
deceptive β If something is deceptive, it encourages you to believe something which is not true.
disingenuous β lacking in frankness, candor, or sincerity; falsely or hypocritically ingenuous; insincere: Her excuse was rather disingenuous.
duplicitous β marked or characterized by duplicity.
false β not true or correct; erroneous: a false statement.
fraudulent β characterized by, involving, or proceeding from fraud, as actions, enterprise, methods, or gains: a fraudulent scheme to evade taxes.
hypocritical β of the nature of hypocrisy, or pretense of having virtues, beliefs, principles, etc., that one does not actually possess: The parent who has a βdo what I say and not what I doβ attitude can appear hypocritical to a child.
untrustworthy β deserving of trust or confidence; dependable; reliable: The treasurer was not entirely trustworthy.
untruthful β not truthful; wanting in veracity; diverging from or contrary to the truth; not corresponding with fact or reality.
astute β If you describe someone as astute, you think they show an understanding of behaviour and situations, and are skilful at using this knowledge to their own advantage.
beguiling β Something that is beguiling is charming and attractive.
clandestine β Something that is clandestine is hidden or kept secret, often because it is illegal.
counterfeit β Counterfeit money, goods, or documents are not genuine, but have been made to look exactly like genuine ones in order to deceive people.
crafty β If you describe someone as crafty, you mean that they achieve what they want in a clever way, often by deceiving people.
cunning β Someone who is cunning has the ability to achieve things in a clever way, often by deceiving other people.
imposture β the action or practice of imposing fraudulently upon others.
indirect β not in a direct course or path; deviating from a straight line; roundabout: an indirect course in sailing.
insidious β intended to entrap or beguile: an insidious plan.
knavish β like or befitting a knave; untrustworthy; dishonest.
lying β the manner, relative position, or direction in which something lies: the lie of the patio, facing the water. Synonyms: place, location, site.
mendacious β telling lies, especially habitually; dishonest; lying; untruthful: a mendacious person.
rascal β a base, dishonest, or unscrupulous person.
roguish β pertaining to, characteristic of, or acting like a rogue; knavish or rascally.
underhand β not open and aboveboard; secret and crafty or dishonorable: an underhand deal with the chief of police.
wily β full of, marked by, or proceeding from wiles; crafty; cunning.
ambiguous β If you describe something as ambiguous, you mean that it is unclear or confusing because it can be understood in more than one way.
deceitful β If you say that someone is deceitful, you mean that they behave in a dishonest way by making other people believe something that is not true.