Latin sense evolution is from "period of time" to "period of weather," to "bad weather" to "storm." Words for "weather" originally were words for "time" in languages from Russia to Brittany. Figurative sense of "violent commotion" in English is recorded from early 14c. Tempest in a teapot attested from 1818; the image in other forms is older, such as storm in a creambowl (1670s).
"figure of speech consisting of omission of conjunctions," 1580s, from Latin, from Greek asyndeton, neuter of asyndetos "unconnected," from a- "not, without" (see a- (3)) + syndetos, from syndein "to bind together," from syn- "together" (see syn-) + dein "to bind," related to desmos "band," from PIE root *dē- "to bind" (see diadem).
"I pitied thee, Took pains to make thee speak, taught thee each hour One thing or other." ["The Tempest"]
We still say that a husband hangs out the broom when his wife goes from home for a short time; and on such occasions a broom besom has been exhibited as a signal that the house was freed from uxorial restraint, and where the master might be considered as a temporary bachelor. [Samuel Johnson and George Steevens, notes to "The Tempest," 1778]
Old English weder "air, sky; breeze, storm, tempest," from Proto-Germanic *wedra- "wind, weather" (source also of Old Saxon wedar, Old Norse veðr, Old Frisian, Middle Dutch, Dutch weder, Old High German wetar, German Wetter "storm, wind, weather"), traditionally said to be from PIE *we-dhro-, "weather" (source also of Lithuanian vėtra "storm," Old Church Slavonic vedro "good weather"), suffixed form of root *we- "to blow." But Boutkan finds this "problematic from a formal point of view" and finds only the Slavic word a likely cognate.
Greek had words for "good weather" (aithria, eudia) and words for "storm" and "winter," but no generic word for "weather" until kairos (literally "time") began to be used as such in Byzantine times. Latin tempestas "weather" (see tempest) also originally meant "time;" and words for "time" also came to mean weather in Irish (aimsir), Serbo-Croatian (vrijeme), Polish (czas), etc. Weather-report is from 1863. Weather-breeder "fine, serene day which precedes and seems to prepare a storm" is from 1650s.
Surnames Fairweather, Merriweather probably reflect disposition; medieval lists and rolls also include Foulweder, Wetweder, Strangweder.
"exhibiting courage or courageous endurance," late 15c., from French brave, "splendid, valiant," from Italian bravo "brave, bold," originally "wild, savage," a word of uncertain origin. Possibly from Medieval Latin bravus "cutthroat, villain," from Latin pravus "crooked, depraved;" a less likely etymology being from Latin barbarus (see barbarous). A Celtic origin (Irish breagh, Cornish bray) also has been suggested, and there may be a confusion of two or more words. Related: Bravely.
Old English words for this, some with overtones of "rashness," included modig (now "moody"), beald ("bold"), cene ("keen"), dyrstig ("daring"). Brave new world is from the title of Aldous Huxley's 1932 satirical utopian novel; he lifted the phrase from Shakespeare ("Tempest" v.i.183).
Storm-wind is from 1798. Storm-door first recorded 1872; storm-water is from 1847; storm-window is attested from 1824. Storm surge attested from 1872. Adverbial phrase _______ up a storm is from 1946.
Old English þynne "narrow, lean, scanty, not dense; fluid, tenuous; weak, poor," from Proto-Germanic *thunni "thin" (source also of West Frisian ten, Middle Low German dunne, Middle Dutch dunne, Dutch dun, Old High German dunni, German dünn, Old Norse þunnr, Swedish tunn, Danish tynd), from PIE *tnu- "stretched, stretched out" (hence "thin"), from root *ten- "to stretch" (source also of Latin tenuis "thin, slender").
These our actors ... were all Spirits, and Are melted into Ayre, into thin Ayre. [Shakespeare, "The Tempest," IV.i.150, 1610]
"Loose or sparse," hence "easily seen through," with figurative extensions. Related: Thinly; thinness. Thin-skinned is attested from 1590s; the figurative sense of "touchy" is from 1670s.
wē-, Proto-Indo-European root meaning "to blow."
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit va-, Greek aemi-, Gothic waian, Old English wawan, Old High German wajan, German wehen, Old Church Slavonic vejati "to blow;" Sanskrit vatah, Avestan vata-, Hittite huwantis, Latin ventus, Old English wind, German Wind, Gothic winds, Old Church Slavonic vetru, Lithuanian vėjas "wind;" Lithuanian vėtra "tempest, storm;" Old Irish feth "air;" Welsh gwynt, Breton gwent "wind."