|1.||[ verb ] to believe especially on uncertain or tentative grounds|
|Synonyms:||suppose hypothesize theorize conjecture hypothecate hypothesise theorise|
: "Scientists supposed that large dinosaurs lived in swamps."
|Related terms:||expect explicate reconstruct hypothesis theory hypothesis speculation guess theorist conjecture theorization supposition speculator|
|2.||[ verb ] talk over conjecturally, or review in an idle or casual way and with an element of doubt or without sufficient reason to reach a conclusion|
"We were speculating whether the President had to resign after the scandal"
|Related terms:||reason suppose guess guess|
|3.||[ verb ] reflect deeply on a subject|
|Synonyms:||reflect muse ponder meditate think_over contemplate chew_over mull excogitate ruminate mull_over|
"I mulled over the events of the afternoon" "philosophers have speculated on the question of God for thousands of years" "The scientist must stop to observe and start to excogitate"
|Related terms:||think study wonder brood bethink puzzle theologise introspect premeditate deliberate contemplation meditation muller muse|
|4.||[ verb ] (stock exchange) invest at a risk|
"I bought this house not because I want to live in it but to sell it later at a good price, so I am speculating"
|Related terms:||invest bull speculation|