"to conjecture, suppose, assume," also "to contrive, plot," late 14c., from Latin coniectare; an obsolete verb replaced by conjecture (v.). Also in form congette.
Entries linking to conject
conjecture v.
early 15c., "infer, predict, form (an opinion or notion) upon probabilities or slight evidence," from conjecture (n.) or from verbs in Medieval Latin and Old French. Middle English had also the parallel forms conjecte (n.), conjecten (v.). Related: Conjectured; conjecturing.