| calmative(noun, adjective, medicine, substance, agent) |
| numb(adjective, description, senseless, characteristics, situations) |
| numbing(adjective, description, characteristics, sleepy, situations) |
| sluggish(adjective, dull, quiet, slow, heavy) |
| wearying(adjective, dull, flat, boring, tedious) |
| dull(noun, adjective, dull, dry, boring) |
| hypnogogic(adjective, description, characteristics, situations) |
| tiring(adjective, description, characteristics, situations) |
| anaesthetic(noun, adjective, dull, drug, dope) |
| deadening(noun, adjective, dull, sleepy, balmy) |
| depressant(noun, medicine, substance, agent) |
| exhausting(adjective, description, characteristics, situations) |
| fatiguing(adjective, description, characteristics, situations) |
| irksome(adjective, description, characteristics, weariness, situations) |
| sleeping draught(noun, expression, idiom, medicine, substance) |
| listless(adjective, description, characteristics, situations) |
| relaxing(adjective, soothing, sedative, calming, tranquilizing) |
| restful(adjective, tired, lethargic, sleepy, relaxing) |
| torpid(adjective, quiet, slow, heavy, tired) |
| tranquil(adjective, sleepy, relaxing, soothing) |