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[senoritafish]

Taken from Merriam-Wesbter Word of the Day:

estival • \ESS-tuh-vul\ • (adjective)
: of or relating to the summer

Example sentence:
Curt basked in the simple estival joys, lolling in his hammock in the heat of midday, sipping an icy lemonade, and listening to the gentle hum of nearby bees.

Did you know?
"Estival" and "festival" look so much alike (and the estival months lend themselves so well to festivals) that you might think they're very closely related, but that isn't the case. "Estival" traces back to "aestas," which is the Latin word for "summer" (and which also gave us "estivate," a verb for spending the summer in a torpid state—a sort of hot-weather equivalent of hibernation). "Festival" also comes from Latin, but it has a different and unrelated root. It derives from "festivus," a term that means "festive" or "merry." "Festivus" is also the ancestor of "festive," as well as "festivity," the much rarer "festivous" (which also means "festive"), and the also rare "infestive," meaning "not merry, mirthless."

Well, I knew about estivating, but this was a new one.

Main Entry: ob·strep·er·ous <http://www.m-w.com/images/audio.gif>
Pronunciation: &b-'stre-p(&-)r&s, äb-
Function: adjective
Etymology: Latin obstreperus, from obstrepere to clamor against, from ob- against + strepere to make a noise
Date: circa 1600
1 : marked by unruly or aggressive noisiness : CLAMOROUS
2 : stubbornly resistant to control : UNRULY
synonym see VOCIFEROUS
- ob·strep·er·ous·ly adverb
- ob·strep·er·ous·ness noun

Used in a news article about the air marshals who detained an "obstreperous" passenger, and pointed guns at other passengers while doing it.