soporific (n.)
- alcohol
- analgesic
- anesthetic
- anodyne
- barb
- barbiturate
- blah
- blue
- calming
- cataleptic
- codeine
- deadening
- depressant
- depressor
- dolly
- downer
- goofball
- heavy
- heroin
- hop
- horse
- hypnotic
- junk
- laudanum
- liquor
- lotus
- lullaby
- mandrake
- meperidine
- methadone
- morphia
- morphine
- napping
- narcoleptic
- narcotic
- nightcap
- opiate
- opium
- pacifier
- paregoric
- passive
- phenobarbital
- poppy
- rainbow
- red
- scag
- sedative
- shit
- slack
- sleeper
- smack
- stoic
- tar
- tranquilizer
- turps
- yawning
- yellow
soporific (adj.)
- aloof
- analgesic
- anesthetic
- anodyne
- apathetic
- benumbed
- blase
- blue
- cataleptic
- comatose
- deadening
- depressant
- detached
- disinterested
- doped
- dozy
- dreamy
- drowsy
- drugged
- dull
- heartless
- heavy
- hopeless
- horse
- hypnotic
- indifferent
- insouciant
- languid
- lethargic
- listless
- napping
- narcoleptic
- narcotic
- narcotized
- nodding
- nonchalant
- numb
- numbed
- numbing
- oscitant
- passive
- phlegmatic
- red
- sedative
- slack
- sleepy
- sluggish
- slumberous
- slumbery
- somniferous
- somnolent
- soothing
- spiritless
- stoic
- stretchy
- stupefied
- stuporous
- supine
- tar
- torpid
- tranquilizing
- uncaring
- unconcerned
- uninterested
- withdrawn
- yawning
- yellow
