Learner's definition of PURE
[also more pure; most pure]
1 : not mixed with anything else 2 : clean and not harmful in any way 3 : having a smooth and clear sound that is not mixed with any other sounds 4 always used before a noun : complete total — used for emphasis
pure [=utter] nonsense/folly/fantasy
It was pure coincidence/chance/luck that we met.
The story was pure fiction.
5 : morally good : free from sexual or evil thoughts 6 always used before a noun : relating to theory and knowledge rather than to the practical uses of something
the pure sciences
7 : purebred
a pure Arabian horse
a pure breed of cattle
pure and simple
: with nothing other than what has been mentioned — used after a noun or phrase to add emphasis
It was fraud, pure and simple.
The relationship is over, pure and simple. [=the relationship is completely over]