Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: The student wanted to impress with his essay and looked up a synonym for standard, he found a word that had a slant rhyme with "proverbial" and was quite proud, what did he find?
colloquial
uncommon, quaint, or apocryphal. (Any of these words could be the answer, depending on the context of the essay