conjecture
1. Interpretation of omens; supposition
2. Inference from defective or presumptive evidence; a conclusion deduced by surmise or guesswork; a proposition (as in mathematics) before it has been proved or disproved
guess · hypothesis · speculation · supposition · surmisal · surmise
conjector · conjecturable · conjectural · conjecturality · conjecturally · conjecture · conjectured · conjecturer · conjectures · conjecturing