Some pretty common words have unexpectedly uncommon origins. Here's a little romp in the usually dry-as-dust field of etymology (from Greek for the origin or literal sense of a word), Quintillian's originatio.
Ashley, Leonard R. N.
"Where They Are Coming From,"
Word Ways: Vol. 40
, Article 8.
Available at: http://digitalcommons.butler.edu/wordways/vol40/iss2/8