Definition of speculation:
guess, arbitrage, enterprise, excogitation, guesstimate, overestimate, speculative, flier, guesswork, meditation, a stab in the dark, gamble, boom, flutter, wager, surmise, guessing, supposition, venture, opinion, commercial, rumination, dead reckoning, hypothesis, scheme, possibility, system, conjecture, yield, crapshoot, estimate, belief, bet, brainwork, risk, commercialism, profitability, pay, adventure, throw, assumption, shot, gambling, surmisal, chance, supposal.
- prediction (part of speech: noun)
thought (part of speech: noun)
- brain work,
- supposition (part of speech: noun)
- "Creation and Its Records", B.H. Baden-Powell.
- "The Works of the Right Honourable Edmund Burke, Vol. VI. (of 12)", Edmund Burke.
- "Modern Society", Julia Ward Howe.