not disputable or deniable; uncontestable. indisputable evidence.

unquestionably real, valid, or the like.

adjective

disputable , doubtful , dubious , indefinite , questionable , refutable , uncertain , unreliable , unsure , vague

adjective

absolute , accurate , actual , certain , double-checked , evident , incontestable , incontrovertible , indubitable , irrefutable , no ifs ands or buts about it , no mistake , open and shut , positive , real , sure , that’s a fact , true , unassailable , undeniable , undoubted , unfabled , unquestionable , veridical , hard , inarguable , undisputable , apodictic , apparent , conclusive , definite , irrefragable , irrefrangible , obvious , uncontestable , unmistakable