blithe

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

"Traveling abroad is a great way to experience different cultures. "

"The outside of the school building was painted a bright yellow. "

"My concern for my daughter's health is significant because she's been feeling unwell lately. "

"My little sister was cheerful this morning, singing happily as she got ready for school. "

"They played long and hard."

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

"Go easy on him: he is but a child."

"All he had to show for four years of attendance at college was a framed piece of paper."

"He casually mentioned that he had a new job. "

"His complete disregard for the safety rules led to an accident. "

"a literary history"