* Highly skilled at deception: They can easily and convincingly hide their true intentions, motivations, and feelings.
* Able to lie effortlessly: This person can fabricate stories, manipulate information, and distort the truth without hesitation or guilt.
* Limitless in their deceit: There is no limit to the extent to which they will go to deceive others, making it difficult to know what is genuine and what is not.
* Potentially dangerous: This level of deception could be used to manipulate, exploit, or harm others.
The phrase implies a deep-seated ability and willingness to deceive, making it a highly negative trait.