You just say... I predict/Foretell/foresee/think/feel/ that ______ is going to fail/collapse/crash/go down. Not really one word. I am guessing you want to say something like "I think the economy is going to go down"
There was a downfall. It was King Peter's downfall. The downfall of the city. The market experienced a downfall.
2008 saw the downfall of the giants of banking.
Some synonyms for prediction are:horoscope,furtune-telling,forecastguessinferforesee
Yes, the compound noun 'downfall' is a common noun, a general word for a loss of power, prosperity, or status; a general word for the cause of such a loss; a general word for any downfall of any kind.
prediction
Prediction
I think the word you are looking for is prediction, insight into the future.
She trusted that her prediction was correct about the ending of her book.
The second.
Predict. To predict means to tell what will happen in the future, while still in the present. Literally, to tell before. A prediction is the thing that is predicted. Predict is the verb root word and prediction is the noun form.
The second syllable.
prediction.