Synonyms of guesswork in English:

guesswork


See US English definition of guesswork

See UK English definition of guesswork

noun

1‘their estimates were based largely on guesswork’

SYNONYMS
guessing, conjecture, surmise, supposition, assumption, presumption, suspicion, speculation, hypothesizing, theorizing, prediction, expectation
approximations, rough calculations
feelings, hunches
informal guesstimates
North American informal ballpark figures