triggering

"My friend told me there was something in the box, but I didn't know what it was yet. "

"The school's new dress code was controversial, sparking debate among parents about its impact on students' freedom of expression. "

"My sister is very helpful, especially when it comes to organizing things. "

"My teacher asked for a response to the question, so I wrote an answer on the board. "

"initiation into a society"

"The new student, the class's newest initiate, introduced herself to the other students. "

"The teacher's negative on the project proposal meant we had to revise it completely. "

"Construction is underway on the new bridge."

"The soldier triggered his rifle at the target. "

"The catapult made a good launcher for the small projectile."

"emotional crisis"

"The new initiate in the chess club was eager to learn the rules. "