shrewdness

"The financial situation at home has improved since my uncle started his new job. "

"The child's disruptive behavior in class was a concern for the teacher. "

"My teacher explained the new math concept, and I understood it perfectly. "

"My aunt is a zoologist; she studies animals at the city zoo. "

"The businesswoman made a shrewd investment by buying the property before anyone else realized its potential. "

"She gave a studied reply."

"After weeks of hard work, I invented a new way to alphabetize matchbooks."

"to allow a servant his liberty;  to allow a free passage;  to allow one day for rest"

"The collective was struggling to afford new equipment for the farm. "

"Quality of life is usually determined by health, education, and income."

"The payment for the new shoes was made with a credit card. "

"He never expected to be discovered."