When is it ok to call someone a false prophet versus someone subject to the fact people have free-will and so predictions can't all be guaranteed?

my opinion is...if one calls someone a false prophet...one makes judgment against another...and in a sense says that person is of lower value...we should always rely on our own sense of true or false...without labeling what others believe to be true or false.....

predictions either come to pass or they don`t depending on many factors...including free will

a friend of mine had a reading and was told that she would have a heart attack.....now I didn`t want my friend to sit around waiting for this heart attack to happen...or for her focus to be so much on this heart attack that she actually created one for herself...nor did I want to say that the prediction or the predictor was false ....as the heart attack may or may not occur....I simply asked her to go within to find what she believes to be true about her health and well being....

I do realize there are some who intentionally deceive others for their own gain...but still I feel we should not label them nor judge...we haven`t walked in their shoes and they may have different lessons to learn on their journeys

In my opinion is it very little that can be guaranteed here in life...but prophet is mostly used around Religion and here is what wiki says

The term false prophet is a label given to a person who is viewed as illegitimately claiming charismatic authority within a religious group. The individual may be seen as one who falsely claims the gift of prophecy, or who uses that gift for demagogy or evil ends. The label 'prophet' can be extremely subjective: Without exception, someone who is considered a 'true' prophet by some people, is simultaneously considered a 'false' prophet by some others.

That is a good question. I feel that if we start calling out the false prophets we risk the chance for others to shy away.  Keeping in mind that while those with prophetic gifts are still learning...misinterpretations can happen.  To say this about anyone here might discourage others who are gathering the courage to come forward. They may not due to fear of being wrong in their interpretation and recieving a mark. Perhaps I misunderstood the question.  

False Prophet is a strong word, I would use it very carefully.  
Safe Journey

Any other thoughts? I didn't want to define the words, because I want to see how others interpret the question. We all have different ideas about what the words mean. Psychic Chef, Prof, Spiritalk, any thoughts?