Proto-Indo-European

*swep-

‘to sleep’

Every word has its own definition in its root. These English words share one: Proto-Indo-European *swep-.

23 English words in this record descend from Proto-Indo-European *swep-, most familiar first.

• insomnia ← insomnis ← in- -is ← somnus ← *swépnos
• hypnosis ← ὕπνωσις ← ὑπνόω ← ὕπνος ← *húpnos
• hypnotic ← hypnotique ← hypnoticus ← ὑπνωτικός ← ὑπνόω
• soporific ← soporifique ← sopor ← *swepōs
• somnolence ← somnolentia ← somnus ← *swépnos
• somnolent ← sompnolent ← somnolentus ← somnus ← *swépnos
• sopor ← *swepōs
• parasomnia ← somnus ← *swépnos
• hypnalis ← ypnalis ← ὕπνος ← *húpnos ← *supnós
• insomnious ← insomniosus ← insomnia ← insomnis ← in- -is
• semisomnia ← somnus ← *swépnos
• somniferous ← somnifer ← somnus ← *swépnos

More words from *swep-

• somnipathy
• sopite
• somnos
• soporate
• somniculous
• sopition
• somnivolent
• somniloquacious
• sweven
• sweb
• swevening

Etymograph / Proto-Indo-European *swep-