presume
to suppose to be true w/o proof
conjecture
conclusion formed w/o evidence
supposition
belief based on no evidence
postulate
to propose an argument
contend
to take a position in an argument
maintain
to strongly defend ur position in an argument
scrutinize
to closely and thoroughly investigate
calculate
to determine based on careful consideration
formulate
to create an idea or plan with systematic thought
appraise
to evaluate the worth of something
ascertain
to find out
tenable
able to be maintained
substantiate
to use proof to support a claim
corrobate
to confirm a person’s explanation
cogent
logical and convincing