thrust · sudden

1. Origins, structure, and basic meaning

• Structure: 突 has 8 strokes and conveys poking or a sudden change.
• Basic usage: 突く is read つく, and 突然 is read とつぜん.

2. Common pitfalls and similar expressions

• Poking with a tool and acting suddenly
  • 箸で突く means poking with chopsticks.
  • で marks the tool used for poking.
  • 突然立ち上がった means suddenly standing up.