Collins COBUILD Advanced Learner's English Dictionary - untested

1. If something or someone is untested, they have not yet been tried out or have not yet experienced a particular situation, so you do not know what they will be like. The Egyptian Army remained an untested force... = untried ADJ 2. If you describe something such as a drug or chemical as untested, you mean that it has not been subject to scientific tests to find out if it is safe to use. ...the dangers of giving untested drugs to people. ADJ: usu ADJ n