Part of speech: Adverb
in opposition to a proposition, opinion, etc.
Example: much was written pro and con
Yard bird, Inmate, Hustle, Learn, Scam
The word "con" comes from Latin contra. It started in Proto-Indo-European *ǵneh₃-. Then it appeared in Proto-Germanic *kunnaną. Later, people used it in Old English cunnan. After that, it was Middle English connen.
know – A related word in the same word family.
can – A related word in the same word family.
convict – A related word in the same word family.
Each civilization borrowed this word because they encountered the concept through cultural contact.