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soporific
adjective
See more 4-syllable adjectives

How to pronounce soporific:

Definition of soporific:

soporific (adjective):
causing sleep
causing or tending to cause sleep

Synonyms for soporific:

drug
hypnagogue
hypnotic
narcoleptic
sleeping capsule
sleeping draught
sleeping pill
sleeping tablet

Antonyms for soporific:

adrenalizing
animating
awake
bracing
brisk
charged
conscious
cordial
electrifying
encouraging
energising
energizing
enlivening
envigorating
exciting
exhilarating
exhilarative
fascinating
fortifying
fresh
galvanising
galvanizing
health-giving
healthful
healthy
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Other 4-syllable words like soporific

Here are some other common words that have 4 syllables, like soporific does.

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