The word 'untried' is correct and usable in written English.
It is an adjective that means not tested, attempted, or experienced. An example of using 'untried' in a sentence is: "After years of success in the business world, the entrepreneur decided to take on a new, untried venture in the tech industry."
It says: "The proposed large-scale extension of conditionality to the working population on low incomes is completely untried and untested, with little international evidence to support its design.
And if even that doesn't offer comfort, I can only leave you with my own preference: that the untried Malik is brought in at No4 for the Ashes, during which he averages 105.
True, Cameron is untried, but that his precisely his appeal.
The Edinburgh festival (August 12th-September 1st), which has stage and literary events as well, has its usual mixture of well-known visitors (New York City Ballet, the Vienna Burgtheater, the Russian National Orchestra) and untried hopefuls.
A public gallery of Buddhist monks, Islamic clergy, local schoolgirls and foreign journalists looked on.Mr Nuon Chea was the Khmer Rouge's chief ideologist and "Brother Number Two" to Pol Pot, who died (untried) in 1998.
Mr Bush is largely untried nationally.
Why, whisper Mr Gore's friends, should the party drop a former congressman, senator and vice-president for an untried newcomer whose only experience of foreign affairs consists of visits to the International House of Pancakes?
Some have taken millions of equally young and untried lives.
But now Mr Ciampi will have to use his untried skills to help nudge Italy towards a more stable and sensible political system.
Even so it took more than three years for the government to bring to parliament a modest scheme to subsidise untried workers, because of union opposition.
But with Mr Basu's Left Front heading for an election by next June under an electorally untried successor, West Bengal's 80m citizens face an uncertain future.His enemies mock the idea that it is the wellbeing of his state that accounts for Mr Basu's electoral success.
