guesswork noun
ADJ. pure | informed, inspired Their results owe more to informed guesswork than to actual knowledge.
VERB + GUESSWORK be based on Their price estimates are based on pure guesswork.
PHRASES a matter of guesswork Long-term forecasts were largely a matter of guesswork.
You can also check other dicts: guesswork (English, 中文解释 ), wordnet sense, Collins Definition