n. 25B6; noun GUESSING, conjecture, surmise, supposition, assumptions, presumptions, speculation, hypothesizing, theorizing, prediction; approximations, rough calculations; hunches; informal guesstimates.
GUESSWORK
Meaning of GUESSWORK in English
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012