alarmingly

"The pollen made her start sneezing uncontrollably. "

"The storm caused severe damage to the school building. "

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

"He was struck by fear on seeing the snake."

"The school's alarm announced the approaching fire drill. "

"The little boy sneezed because he inhaled pepper. "

"They identified a burst pipe as the cause of the flooding."

"The town crier alarmed the villagers when he announced the approaching invaders. "

"The storm clouds gathered frighteningly fast, turning the afternoon sky dark. "

"The extent of the student's knowledge about the topic varied greatly; some students knew a lot, and others knew very little. "

"The children went to school this morning. "

"The lightning caused thunder."