I. con ‧ jec ‧ ture 1 /kənˈdʒektʃə $ -ər/ BrE AmE noun formal
[ Date: 1300-1400 ; Language: Latin ; Origin: conjectura , from conicere 'to throw together' , from com- ( ⇨ COM- ) + jacere 'to throw' ]
1 . [uncountable] when you form ideas or opinions without having very much information to base them on:
What she said was pure conjecture.
There has been some conjecture about a possible merger.
2 . [countable] an idea or opinion formed by guessing SYN guess , hypothesis :
My results show that this conjecture was, in fact, correct.
—conjectural adjective
II. conjecture 2 BrE AmE verb [intransitive and transitive] formal
to form an idea or opinion without having much information to base it on SYN guess
conjecture that
It seems reasonable to conjecture that these conditions breed violence.