explicate,
formulate,
develop elaborate, as of theories and hypotheses; "Could you develop the ideas in your thesis"
speculate -
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"
reason think logically; "The children must learn to reason"
hazard,
venture,
guess,
pretend proceed somewhere despite the risk of possible dangers; "We ventured into the world of high-tech and bought a supercomputer"
suppose,
say express a supposition; "Let us say that he did not tell the truth"; "Let's say you had a lot of money--what would you do?"
speculate -
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"
speculate -
reflect deeply on a subject; "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"