analytic, cut-and-try, empirical, examinational, examinatorial, examining, experimental, explorational, explorative, exploratory, fact-finding, feeling, groping, hit-or-miss, indagative, inspectional, inspectorial, investigational, investigative, investigatory, pilot, probationary, probative, probatory, proving, provisional, tentative, test, testing, trial-and-error, trial, trying, verificatory, zetetic