Merriam-Webster's Word of the Day for September 22, 2017 is:
yeasty \YEE-stee\ adjective
1 : of, relating to, or resembling yeast
b : marked by change
c : full of vitality
d : frivolous
"[A]ll this yeasty mingling of dimly understood facts with vague but deep impressions … had been disturbing her during the weeks of her engagement." — George Eliot, Daniel Deronda, 1876
"'O.K., I'm ready,' Ms. Boym said, addressing this reporter's microphone and letting loose a warm, yeasty laugh." — William L. Hamilton, The New York Times, 28 Nov. 2002
Did you know?
The word yeast has existed in English for as long as the language has existed. Spellings have varied over time—in Middle English it was yest and in Old English gist or giest—but the word's meaning has remained basically the same for centuries. In its first documented English uses in the 1500s, the adjective yeasty described people or things with a yellowish or frothy appearance similar to the froth that forms on the top of fermented beverages (such as beers or ales). Since then, a number of extended figurative senses of yeasty have surfaced, all of which play in some way or another on the excitable, chemical nature of fermentation, such as by connoting unsettled activity or significant change.