fortnight
noun
fort·night ˈfȯrt-ˌnīt 
: a period of 14 days : two weeks
They stayed with us for a fortnight.
Example Sentences
Recent Examples on the Web While Covid-19 cases and hospitalizations have been on the rise in most states in recent weeks and jumped 20% nationwide over the past fortnight, deaths have risen only modestly and have hovered around 300-400 a day since April. 
Robert Hart, Forbes, 19 July 2022 The newest offshoot of Omicron, along with a closely related variant, BA.4, are fueling a global surge in cases — 30% over the past fortnight, according to the World Health Organization (WHO). Eliza Mackintosh, CNN, 13 July 2022 Most people wouldn’t eat the quantities required to trigger these side effects (two ounces a day for a fortnight). Rebecca Douglas, Bon Appétit, 20 Apr. 2022 Świątek, who did not play a warm-up tournament on grass coming into the fortnight, struggled with her serve as Cornet converted 5-of-6 break chances. Adam Zagoria, Forbes, 2 July 2022 The buzz around Raducanu and Alcaraz has helped fuel interest in this year’s Wimbledon fortnight, the first at full strength — at least for spectators — since the start of the pandemic. Los Angeles Times, 27 June 2022 In the next fortnight or so, the court will also hand down its decision in West Virginia v. Environmental Protection Agency. Matt Ford, The New Republic, 20 June 2022 Cawthorn faces a court date in early May, followed, a fortnight later, by a Republican primary against seven challengers, who have more than tickets to talk about on the campaign trail. The New Yorker, 2 May 2022 All three auction houses opened their evening young-art sales with the Canadian painter Anna Weyant (b. 1995), the fortnight’s breakout star. New York Times, 23 May 2022 See More
Robert Hart, Forbes, 19 July 2022 The newest offshoot of Omicron, along with a closely related variant, BA.4, are fueling a global surge in cases — 30% over the past fortnight, according to the World Health Organization (WHO). Eliza Mackintosh, CNN, 13 July 2022 Most people wouldn’t eat the quantities required to trigger these side effects (two ounces a day for a fortnight). Rebecca Douglas, Bon Appétit, 20 Apr. 2022 Świątek, who did not play a warm-up tournament on grass coming into the fortnight, struggled with her serve as Cornet converted 5-of-6 break chances. Adam Zagoria, Forbes, 2 July 2022 The buzz around Raducanu and Alcaraz has helped fuel interest in this year’s Wimbledon fortnight, the first at full strength — at least for spectators — since the start of the pandemic. Los Angeles Times, 27 June 2022 In the next fortnight or so, the court will also hand down its decision in West Virginia v. Environmental Protection Agency. Matt Ford, The New Republic, 20 June 2022 Cawthorn faces a court date in early May, followed, a fortnight later, by a Republican primary against seven challengers, who have more than tickets to talk about on the campaign trail. The New Yorker, 2 May 2022 All three auction houses opened their evening young-art sales with the Canadian painter Anna Weyant (b. 1995), the fortnight’s breakout star. New York Times, 23 May 2022 See More Word History
Etymology
Middle English fourtenight, alteration of fourtene night, from Old English fēowertȳne niht fourteen nights
First Known Use
before the 12th century, in the meaning defined above
Kids Definition
fortnight
noun
fort·night ˈfȯrt-ˌnīt
: two weeks