忧愁 (yōu chóu): จะต้องกังวล

Upon hearing the news that her son failed the college entrance exam, she was worried all night and couldn't sleep.

The company has been losing money continuously, and the boss always has a worried expression on his face.

Rainy days easily make people feel worried and think of family far away.

He is worried because of long-term unemployment and doesn't know how to face the future.