perfunctory

"The store's cash register recorded the total sales for the day. "

"My sister was careless about her deadlines, often turning in assignments late. "

"The teacher greeted her students warmly at the start of class. "

"My favorite thing about school is the library. "

"The security guard's quick looking around the store helped him spot the shoplifter. "

"The army cashiered the soldier for insubordination. "

"It took him only twenty minutes to perform the task."

"The student recited the poem mechanically, without any emotion or understanding. "

"The indifferent student didn't care about the upcoming exam. "

"My sister learned to write in a very careful manner. "

"You made a promise, son, and now you must fulfill it."

"The school is located just outside the town, without the main shopping area. "