sop·o·rif·ic 
(sŏp′ə-rĭfĭk, sō′pə-)
(sŏp′ə-rĭfĭk, sō′pə-)adj.
1. Inducing or tending to induce sleep.
2. Drowsy.
n.
A drug or other substance that induces sleep; a hypnotic.
- deconcentrate
- deconcentration
- decondition
- decongest
- decongestant
- decongestion
- decongestive
- deconsecrate
- deconsecration
- deconstruct
- deconstruction
- deconstructionism
- deconstructionist
- deconstructive
- deconstructivism
- deconstructivist
- decontaminant
- decontaminate
- decontamination
- decontaminator
- decontrol
- decor
- decorate
- Decorated style
- decoration