7
take for granted(verb, expression, idiom, fancy, reason)
7
theorise(verb, conjecture)
7
wonder(verb, consider, reason, assume, think)
6
brood(verb, study, consider, worry, resolve)
6
hypothecate
6
think over(verb, expression, phrasal verb, study, consider)
6
understand(verb, hold, accept, consider, reason)
5
believe(verb, hold, accept, consider, fancy)
5
envision(verb, develop, consider, produce, create)
5
fancy(verb, accept, develop, consider, produce)
5
fantasize(verb, concentrate, fabricate, suppose, hallucinate)
5
play the market(verb, expression, idiom, risk, gamble)
5
plunge(verb, set, try, expose, risk)
5
predict(verb, think, believe, suggest, pretend)
4
dare(verb, set, advance, challenge, try)
4
debate(verb, consider, examine, think, deliberate)
4
divine(verb, accept, consider, reason, assume)
4
dope(verb, informal, theorize)
4
game(verb, set, back, risk, stake)
4
gather(verb, hold, study, accept, consider)
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APASmart Define. (2015). speculate thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/speculate/thesaurus/synonyms
ChicagoSmart Define. 2015. "speculate thesaurus" https://smartdefine.org/speculate/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, speculate thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/speculate/thesaurus/synonyms>.
MLASmart Define. "speculate thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/speculate/thesaurus/synonyms>