| narcotic(noun, adjective, medicine, drug, substance) |
| hypnotic(noun, adjective, medicine, dull, quiet) |
| sedative(noun, adjective, medicine, drug, substance) |
| opiate(noun, adjective, medicine, drug, substance) |
| somnifacient(noun, adjective, medicine, medication, inactivity) |
| somniferous(adjective, dull, quiet, effect, heavy) |
| soporiferous(adjective, effect, affect, inactivity, characteristics) |
| sleepy(adjective, dull, quiet, slow, effect) |
| sleeping pill(noun, expression, idiom, medicine, medication) |
| boring(adjective, dull, flat, ordinary, dry) |
| narcotizing(adjective, description, characteristics, situations) |
| sleep-inducing(adjective, description, sleep, characteristics, situations) |
| somnific(adjective, quiet, dark, heavy, inactivity) |
| slumberous(noun, adjective, dull, quiet, slow) |
| tedious(adjective, dull, flat, ordinary, dry) |
| drowsy(adjective, dull, effect, affect, inactivity) |
| sleeping potion(noun, expression, medicine, medication, substance) |
| somnolent(adjective, dull, quiet, effect, heavy) |
| monotonous(adjective, dull, flat, ordinary, dry) |
| tiresome(adjective, dull, flat, stupid, ordinary) |