to judge the value, worth, quality of (something)

judge, estimate

(to make) a conclusion, opinion, based on incomplete evidence

speculation, assumption

an approximate calculation (of size, cost etc)

approximate calculation; educated guess

to find out, decide, the amount or value of (something)

judge

to form an opinion, give an answer, make a statement about (something) that is not based on very careful thought, calculation or definite knowledge

belief, speculation

to produce (an idea etc) as a hypothesis

speculate

a plan, idea etc that cannot happen or be successful

think about deeply and theorize

to think, consider, form opinions (without having complete knowledge); to buy and sell goods, shares etc with the hope of profit from changes in their market value

think about deeply and theorize

(an instance of) speculating; (a business deal as a result of) speculating

theory, guess

to thing of (something) as likely; to take (something) as a fact

assume, guess

the act of supposing something to be true but without proof; a guess

guess, belief

to guess (the usual word)

guess, conclusion

for all practical purposes

for all practical purposes