坦

The core sense is a lack of obstruction or irregularity:

1. Physical: Flat, level, or smooth (specifically ground or paths lacking potholes, jagged rocks, or sudden drops).

2. Psychological: Self-possessed, composed, or unperturbed.

3. Interpersonal: Frank, open, or candid; speaking without concealment.

Primarily an adjective describing a state or quality. It rarely functions as a transitive verb ("to flatten").

Contrast with 平 (píng): While both can mean "flat" or "peaceful," 平 emphasizes balance, symmetry, equality, or the restoration of order. 坦 emphasizes breadth and the inherent absence of obstacles on the surface itself.

Determine if the glyph describes literal terrain, a temperament (calm/composed), a manner of speaking (frank/open), or a situational state (a life or path devoid of hardship).