verb (used with object), paid or ( Obsolete, except for def 12 ) payed, paying. 1. to settle (a debt, obligation, etc.), as by transferring money or goods, or by doing something: Please pay your bill. 2. to give over (a certain amount of money) in exchange for something: He paid twenty dollars for the shirt.
Mona Vanderwaal is a fictional character in the Pretty Little Liars book series by Sara Shepard and its Freeform television series adaption. Introduced as the primary antagonist, Mona initially harbors a grudge against a group of high-school classmates, using her intelligence and resources to torment them anonymously.
In Season 6, after Mona's return to Rosewood, Lesli is again shown to be totally different from the Liars' initial perception of her as a loyal friend to Mona. She verbally threatens Mona and later lashes out at her. Lesli is slightly emotionally unstable.