accidentally

"The newspaper exposed the company's illegal dumping of waste. "

"The students' performance was largely positive this semester. "

"The doctor prescribed penicillin for my son's ear infection, hoping the antibiotic would quickly kill the bacteria. "

"I unintentionally deleted the important document from my computer. "

"The doctor identified the specific bacteria causing the student's illness. "

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

"The baker poured the batter into the cake mold before putting it in the oven. "

"The mold grew in the damp basement, releasing tiny spores into the air that made my allergies worse. "

"We had the chance to meet the president last week."

"His new haircut was an accidental; he'd meant to trim it a little, but the scissors slipped. "

"The meeting ended unexpectedly early, leaving us with extra time before dinner. "

"Turning the corner, I discovered a lovely little shop. I discovered that they sold widgets."