Extra limbs
Blurriness
Watermarks
Deformation
Noise
Overexposure/Underexposure
Compression artifacts
Color casts
Distorted perspective
Unwanted text/logos
bad result, worst, random, invalid, inaccurate, imperfect, blurry, deformed, disfigured, mutation, mutated, ugly, out of focus, bad anatomy, text, error, extra digit, fewer digits, worst quality, low quality, normal quality, noise, jpeg artifact, compression artifact, signature, watermark, username, logo, low resolution, worst resolution, bad resolution, normal resolution, bad detail, bad details, bad lighting, bad shadow, bad shading, bad background, worst background.