straight

Extending continuously in the same direction without curving.

Having no waves or bends.

Not bent or bowed; rigid or erect.

Of or relating to a midair position in diving or gymnastics in which the body is held rigid without bending at the hips or knees and the feet are kept together.

Perfectly horizontal or vertical; level or even.

Direct and candid.

Following a direct or correct method or approach; systematic.

Coming from a reliable source; factual.