dictonary
A single word would be 'origin'.
Unoriginal Source
Origin.
The word origin is a synonym for the noun source. The nouns origin and source are both abstract nouns.
The root is origo, which is Latin for birth, beginning, or source, which is from oriri which means "to rise".
The noun 'beginning' is an abstract noun; a word for the point in time or space at which something starts. The noun 'source' is an abstract noun; a word for the origin from which something comes or can be obtained
Etymology, the study of the origin of words and the way in which their meanings have changed throughout history.
a. thesaurus b. French textbook c. grammar textbook d. Oxford English textbook = Oxford English textbook
Origin, source
Source
Atlas
The word hazard is most commonly used as a noun and is defined as a source of danger. The origin of the word hazard is around 1530 and is Middle English in origin.