upright

The word carries a strong association between physical posture and moral character. When used to describe a person, it suggests a rigidity of principle and a refusal to bend to corruption, mirroring the physical stability of something standing straight up. In a technical or physical sense, it denotes a precise 90-degree relationship to the ground. It is more formal than saying something is vertical and often implies a state of balance or intended orientation, such as an upright chair or an upright piano.