1. Sleep inducing
   - soporific, soporiferous, somnific, hypnogogic, hypnagogic

See also: depressant

• Fast of Esther
• Fast of Gedaliah
• Fast of Tammuz
• Fast of Tevet
• Fast of the Firstborn
• fast one
• fast reactor
• fast time scale
• fast track
• fast-breaking
• fast-flying
• fast-footed
• fast-growing
• fast-paced
• fast-talk
• fastback
• fastball
• fasten
• fasten on
• fastened
• fastener
• fastening
• faster
• fastest
• fastidious