1. Sleep inducing
   - soporific, somniferous, somnific, hypnogogic, hypnagogic 
2. Inducing mental lethargy
   - narcotic, soporific

See also: depressant, uninteresting

• Henry VI
• Henry VII
• Henry VIII
• Henry Villard
• Henry Wadsworth Longfellow
• Henry Ward Beecher
• Henry Watson Fowler
• Henry Wheeler Shaw
• Henry's law
• Henson
• hent
• Hentai
• hep
• hepadnavirus
• heparin
• hepatic
• hepatic artery
• hepatic coma
• hepatic duct
• hepatic lobe
• hepatic portal vein
• hepatic tanager
• hepatic vein
• hepatica
• Hepaticae