3
supposition(noun, feeling, idea, belief, guess)
2
appraisal(noun, measure, guess, conclusion, estimate)
2
approximate(verb, value, guess, reckon)
2
assay(noun, verb, check, consider, determine)
2
assessment(noun, measure, guess, conclusion, estimate)
2
ballpark figure(noun, expression, idiom, feeling, measure)
2
believe(verb, consider, determine, fancy, reason)
2
calculate(verb, check, consider, determine, reason)
2
calculation(noun, guess, estimate)
2
class(verb, check, consider, determine, examine)
2
compute(verb, consider, determine, total, examine)
2
consider(verb, determine, reason, examine, figure)
2
deduce(verb, consider, determine, reason, examine)
2
deem(verb, reason, examine, review, assume)
2
determine(verb, consider, examine, measure, figure)
2
expect(verb, consider, determine, fancy, reason)
2
fancy(noun, verb, reason, assume, think)
2
figure(verb, consider, determine, reason, total)
2
figure out(verb, expression, phrasal verb, check, reason)
2
hazard a guess(verb, expression, idiom, fancy, reason)
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APASmart Define. (2015). guesstimate thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/guesstimate/thesaurus/synonyms
ChicagoSmart Define. 2015. "guesstimate thesaurus" https://smartdefine.org/guesstimate/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, guesstimate thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/guesstimate/thesaurus/synonyms>.
MLASmart Define. "guesstimate thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/guesstimate/thesaurus/synonyms>