unestablished
adjective
un·es·tab·lished ˌən-i-ˈsta-blisht 
: not established: such as
a
: not firmly based
an unestablished reputation
an unestablished business
b
: having little or no previous success
unestablished writers
Example Sentences
Recent Examples on the Web Though umpire Todd Tichenor was the first big-leaguer to wear the Force3 mask during a game in 2014, players were more reluctant to try something new, especially from a small, unestablished manufacturer. 
Jared Diamond, WSJ, 4 Oct. 2021 The only thing that saved them was a COVID-19 treatment whose efficacy is still unestablished: convalescent plasma. Kat Eschner, Fortune, 29 June 2021 Most intriguing in this group of unestablished free agents is a former top prospect in baseball in Jurickson Profar. Jon Meoli, baltimoresun.com, 16 Dec. 2020 Any artist in the music industry will testify that a 40 percent profit share is a great deal, especially for an unestablished artist that till this day has never delivered an album. Jasper Scherer, Houston Chronicle, 7 Mar. 2020 The only conventional-pop winner in the major categories was rising talent Dua Lipa, who won best new artist in a field of relatively unestablished names. Andrew Unterberger, Billboard, 19 Sep. 2019 Gaining entry to present during haute couture week in Paris can be immensely difficult for unestablished brands, let alone major fashion houses. Kristen Bateman, New York Times, 3 Aug. 2017 The rest of the room was filled with unestablished, young players. Matt Gelb, Philly.com, 7 July 2017 Once again, this is the risk of building a brand around an unestablished player. Adi Joseph, USA TODAY, 20 May 2017 See More
Jared Diamond, WSJ, 4 Oct. 2021 The only thing that saved them was a COVID-19 treatment whose efficacy is still unestablished: convalescent plasma. Kat Eschner, Fortune, 29 June 2021 Most intriguing in this group of unestablished free agents is a former top prospect in baseball in Jurickson Profar. Jon Meoli, baltimoresun.com, 16 Dec. 2020 Any artist in the music industry will testify that a 40 percent profit share is a great deal, especially for an unestablished artist that till this day has never delivered an album. Jasper Scherer, Houston Chronicle, 7 Mar. 2020 The only conventional-pop winner in the major categories was rising talent Dua Lipa, who won best new artist in a field of relatively unestablished names. Andrew Unterberger, Billboard, 19 Sep. 2019 Gaining entry to present during haute couture week in Paris can be immensely difficult for unestablished brands, let alone major fashion houses. Kristen Bateman, New York Times, 3 Aug. 2017 The rest of the room was filled with unestablished, young players. Matt Gelb, Philly.com, 7 July 2017 Once again, this is the risk of building a brand around an unestablished player. Adi Joseph, USA TODAY, 20 May 2017 See More Word History
First Known Use
1646, in the meaning defined above