Here's a short story:

A vernacular or vernacular language is the native language or native dialect (usually colloquial or informal) of a specific population, especially as distinguished from a literary, national or standard variety of the language, or a lingua franca (also called a vehicular language) used in the region or state inhabited by that population. Some linguists use "vernacular" and "nonstandard dialect" as synonyms. 

The use of "vernacular" is not recent. In 1688, James Howell wrote: 

Concerning Italy, doubtless there were divers before the Latin did spread all over that Country; the Calabrian, and Apulian spoke Greek, whereof some Relicks are to be found to this day; but it was an adventitious, no Mother-Language to them: 'tis confess'd that Latium it self, and all the Territories about Rome, had the Latin for its maternal and common first vernacular Tongue; but Tuscany and Liguria had others quite discrepant, viz. the Hetruscane and Mesapian, whereof though there be some Records yet extant; yet there are none alive that can understand them: The Oscan, the Sabin and Tusculan, are thought to be but Dialects to these. 

Here vernacular, mother language and dialect are already in use in a modern sense. According to Merriam-Webster, "vernacular" was brought into the English language as early as 1601 from the Latin "vernaculus" ("native") which had been in figurative use in Classical Latin as "national" and "domestic", having originally been derived from "vernus" and "verna", a male or female slave respectively born in the house rather than abroad. The figurative meaning was broadened from the diminutive extended words "vernaculus, vernacula". Varro, the classical Latin grammarian, used the term "vocabula vernacula", "termes de la langue nationale" or "vocabulary of the national language" as opposed to foreign words. (End of story)

Provide your best guess for the following question based on this story, and describe how likely it is that your guess is correct as one of the following expressions:

Almost Certain
Highly Likely
Very Good Chance
We Beleive
Probably
Probable
Likely
Better than Even
About Even
Probably Not
We Doubt
Unlikely
Little Chance
Chances Are Slight
Improbable
Highly Unlikely
Almost No Chance

Give ONLY the guess and your confidence, no other words or explanation. For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>
Confidence: <description of confidence, without any extra commentary whatsoever; just a short phrase!>

Here are a few examples of questions and answers:

Question: Is the use of vernacular recent?
Guess: No
Confidence: <appropriate level of confidence in this guess>

Question: What is a vernacular?
Guess: The native language or native dialect of a specific population
Confidence: <appropriate level of confidence in this guess>

Question: What are some synonyms?
Guess: vernacular" and "nonstandard dialect"
Confidence: <appropriate level of confidence in this guess>

Question: Who spoke greek?
Guess: the Calabrian
Confidence: <appropriate level of confidence in this guess>

Question: Anyone else?
Guess: The Apulian
Confidence: <appropriate level of confidence in this guess>

Question: When was the word introduced into the english language?
Guess: as early as 1601
Confidence: <appropriate level of confidence in this guess>

Question: According to who?
Guess: Merriam-Webster
Confidence: <appropriate level of confidence in this guess>

Now answer the following question in the same format.

Question: From what latin word?

Vernaculus