tachiaがるgarutaちあがるchiagaru
1.

To transition from a seated or crouched position to an upright posture, often indicating a readiness to engage or respond to a situation.

2.

To recover from a state of despair or defeat, regaining vitality or strength, especially after a significant setback.

3.

To initiate action or begin taking steps after a period of inactivity or hesitation.

4.

In the context of activities like wrestling, to officially start a competition or bout after preparing oneself.

5.

To rise or extend upwards, often used in relation to physical objects or elements that grow tall or ascend.

Example:

突然若い女性が立ち上がった。