robotic

Robotic means machine-like and without human feeling. Stiff movements, a flat voice, nothing behind the eyes.

The literal sense belongs to engineering, so robotic surgery and a robotic arm are precise technical terms and carry no criticism at all. The figurative sense is entirely negative, since describing a person's delivery as robotic means it was lifeless. That double life is worth knowing, because the same word praises a machine and damns a performance. The field is robotics, and the noun is robot.