The root word "somnus" means sleep.
It depends upon which part of the word is most important. If "sleep" is the essential part, then the root is hypnos; but if "leading to, or causing" is the core meaning, then the root is ago, to lead.
The root word "dorm" is Latin. It comes from the Latin word "dormire," which means "to sleep."
Sleep
cacosomniadyssomnia, dyssomicdyssomniachypersomniahyposomniahyposomnyinsomniainsomniacinsomnolenceintersomnialintersomniousLacus SomniorumlevisomniousPalus Somnii
The root word "somnus" means sleep.
It depends upon which part of the word is most important. If "sleep" is the essential part, then the root is hypnos; but if "leading to, or causing" is the core meaning, then the root is ago, to lead.
The root word "dorm" is Latin. It comes from the Latin word "dormire," which means "to sleep."
The Greek word for sleep is ύπνος (hypnos). English words such as hypnosis, hypnotize, etc., derive from this root.
A combining form meaning "sleep" used in the meaning of compound words
Hypnosis is from the Greek root Hypnos, the Greek personification of sleep whose twin was Thánatos, or death.
Sleep
'Insomnia' is the Latin! It's from the root '-somnia', meaning sleep/dreaming, and the prefix 'in-', which inverts it.
somniferous, insomnia, somnambulist (and related words such as somnambulate, somnambulism, somnambulistic, etc)
Fugitive has no root word it is the root word.
The word dorm means a room in a college or a boarding school or overnight camp. However, the root "dorm" means "sleep"...dormant, dormitory, dormer...
There is no root word of river. It itself is a root word.