Unadulterated

I envied John. He not only attracted the unadulterated attention of every lady within his immediate vicinity, his educational performance was world-renowned as the cream of the crop.

He found what he described as "air unadulterated with human additives, stars undimmed by city lights, the uninterrupted sounds of nature, and fields of flowers unblemished by footprints."

The only thing flowing through Tom's veins was pure, unadulterated rage.

I promise you it's unadulterated.

In the works of nature we find, in many instances, beauty and sublimity involved among circumstances, which are either indifferent, or which obstruct the general effect: and it is only by a train of experiments, that we can separate those circumstances from the rest... Accordingly, the inexperienced artist, when he copies nature, will copy her servilely... and the beauties of his performances will be encumbered with a number of superfluous or disagreeable concomitants. Experience and observation alone can enable him to make this determination: to exhibit the principles of beauty pure and unadulterated, and to form a creation of his own, more faultless, than ever fell under the observation of his senses.