sleight

"Every person who passes by is a potential customer."

"The teacher convinced the students that the Earth revolves around the sun, using diagrams and explanations. "

"He will need lots of practice with the lines before he performs them."

"The cat disappeared behind the sofa. "

"The new sports car was incredibly expensive, costing more than my entire year's savings. "

"The teacher's observation of the student's progress showed that he was struggling with math. "

"The salesman at the electronics store showed my dad several different laptops. "

"The politician's sudden show of concern for the poor was seen by many as mere artifice to win votes. "

"Playing computer games can improve your manual dexterity."

"The surgeon was very dexterous, quickly and precisely sewing up the patient's wound. "

"the performance of an undertaking or a duty"

"an impressive movie"