굳어지다

[구더지다]

1. harden; become solid
For a soft thing to become hard or stiff.

2. become firm; become strong
For one's will, intention, resolution, etc., to become so strong that they do not change or shake.

3. stiffen; freeze
For a person's facial expression or attitude to become gloomy or stiff.

4. stiffen
For some parts of the body such as muscles or joints to become stiff.

5. become firm; become strong
For repeated occurrences, phenomena, words, behavior, etc., to become fixed.