"untainted" is correct and usable in written English.
You can use it to mean that something or someone is not contaminated, spoiled, or affected in a negative way. For example: "The politician maintained an untainted record during his tenure as governor."
This means he is inexperienced, but also untainted by any of Malawi's recent scandals.
As dreadful as it was living through it, grief is the purest and most untainted emotion I have ever felt.
Even baby Flora, untainted by junk food, tries a little bit of Filet-o-Fish Filet-o-Fish Filet-o-Fish
Kiska capitalised on his untainted image and touted himself as a bulwark against a Fico power grab.
Think of the Kinks Village Green Preservation Societyy, with its evocation of an England of china teacups, cricket matches and picture-postcard hamlets; or more recently of Blur's Modern Life is Rubbish and Parklife, with their longing for cultural symbols that are untainted by American influence.
The brief effort to draft Sir Keir was an act of fantasy politics – but also a sign, perhaps, of unhappiness with the field on offer and of a slightly desperate longing for an untainted saviour.
The potager, where things grow willingly in untainted soil, produces volumes of summer fruits and the herbs Hélène so delights in using.
But Scottish Labour was in crisis long before the referendum vote, and there were plenty who considered his tour to be an extended job application, cleverly inserting himself into the debate while remaining untainted by the unpopularity of Labour leaders north and south of the border.
But many will call for a new broom untainted by Fifa's many scandals.
If the internet is good for one thing, it's resurrecting archive photos, footage and audio from the past lives of the rich and famous, their expressions often untainted by the rigmarole of endless promo, their smiles full of youthful abandon and their faces covered in a smattering of spots, or in George Clooney's case, the worst fringe of all time.
In exchange the government would pass legal reforms that free thousands of Kurdish prisoners, give amnesty to PKK fighters untainted by violence, boost the power of local government and scrap articles in the constitution that prohibit education in the Kurdish language.
