130 entries under speculate topic. ×

12
estimate(noun, verb, check, consider, determine)
12
guess(noun, verb, consider, determine, reason)
9
conjecture(noun, verb, consider, determine, reason)
6
surmise(noun, verb, consider, determine, fancy)
3
hypothesize(verb, fancy, reason, assume, think)
3
judge(noun, verb, check, consider, determine)
3
postulate(noun, verb, feeling, reason, idea)
3
reckon(verb, check, consider, determine, reason)
3
suppose(noun, verb, consider, determine, fancy)
2
believe(verb, consider, determine, fancy, reason)
2
calculate(verb, check, consider, determine, reason)
2
deduce(verb, consider, determine, reason, examine)
2
deem(verb, reason, examine, review, assume)
2
fancy(noun, verb, reason, assume, think)
2
figure out(verb, expression, phrasal verb, check, reason)
2
hazard a guess(verb, expression, idiom, fancy, reason)
2
infer(verb, fancy, reason, assume, think)
2
opine(verb, reason, assume, think, understand)
2
predict(verb, consider, determine, examine, figure)
2
presume(verb, fancy, reason, assume, think)
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APASmart Define. (2015). guesstimate thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/guesstimate/thesaurus/synonyms
ChicagoSmart Define. 2015. "guesstimate thesaurus" https://smartdefine.org/guesstimate/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, guesstimate thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/guesstimate/thesaurus/synonyms>.
MLASmart Define. "guesstimate thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/guesstimate/thesaurus/synonyms>