Prior to wording forecast? (10)
I believe the answer is:
prediction
'forecast?' is the definition.
(forecast is a kind of prediction)
'prior to wording' is the wordplay.
'prior to' becomes 'pre' (I've seen this in other clues).
'wording' becomes 'diction' (synonyms).
'pre'+'diction'='PREDICTION'
(Other definitions for prediction that I've seen before include "Prophesy" , "Forecast" .)