Was heißt »unvermischt« auf Englisch?

Das Adjektiv »unvermischt« lässt sich wie folgt von Deutsch auf Englisch übersetzen:

Synonyme

This is sheer madness.
I couldn't sleep for sheer worry, while Tom slept soundly beside me, snoring.
In the game of chess, the relative value of pieces is usually as follows: the queen is worth 9, the rook 5, the bishop 3, the knight also 3, and the pawn 1. The king has absolute value.
It's the party's job, even with an absolute majority, to think further ahead than the government can act. If the government's satisfied with the party, then the party hasn't thought far enough.
Anne sighed for sheer happiness.
"Oh, this is a day left over from Eden, isn't it, Diana?" . . . and Anne sighed for sheer happiness.
This is sheer nonsense.
Tom was an absolute angel.
Not only was their sheer amount stunning, but also the size of every individual one: magnificent pumpkins, as far as the eye could see.
You're an absolute idiot.
I need to be in absolute control of everything around me all the time.
This is an absolute lie.
Time is not an absolute reality but an aspect of our consciousness.
Mathematics would certainly not have come into existence if one had known from the beginning that there was in nature no exactly straight line, no actual circle, no absolute magnitude.
Spying between friends is an absolute no no.
Leaving the children alone was sheer thoughtlessness.
Power tends to corrupt and absolute power corrupts absolutely.
That is the absolute truth!
Her success was due to sheer hard work.
He is an absolute monarch.