ray·less 
(rālĭs)
(rālĭs)adj.
1. Lacking rays: a rayless flower.
2. Lacking light: "Hid by a rayless night" (Percy Bysshe Shelley).
- subsoil
- subsoiler
- subsolar
- subsonic
- subsp.
- subspecialist
- subspecialization
- subspecialize
- subspecialty
- subspecies
- subspecific
- subst.
- substage
- substance
- substance abuse
- substance abuser
- substance P
- substance use disorder
- substandard
- substantia gelatinosa
- substantial
- substantiality
- substantially
- substantialness
- substantia nigra