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

See also: depressant

• welding
• weldment
• welfare
• welfare case
• welfare state
• welfare work
• welfare worker
• welfare-statist
• welfarist
• welkin
• well
• well done
• well I never
• well out
• well over
• well thought out
• well up
• well water
• well-adjusted
• well-advised
• well-appointed
• well-balanced
• well-behaved
• well-bound
• well-branched