Dissembling is the action of hiding one's true feelings or
motives. A sentence using dissembling would be "She whispered that
she was happy as she hid the gun under her pillow. Her smile was
dissembling her fears."
View page
we are so used to dissembling with others that in time we come
to deceive and dissemble with ourselves
View page
It means that Abigail Williams is great at lying
(dissembling).