acid test, affirmation, ascertainment, assay, assurance, attestation, authentication, backing, backing up, bearing out, blank determination, bolstering, brouillon, buttressing, certification, check, checking, circumstantiation, collation, comparative scrutiny, confirmation, corroboration, corroboratory evidence, criterion, cross-check, crucial test, crucible, determination, docimasy, documentation, ensuring, essay, establishment, feeling out, first draft, fortification, kiteflying, ordeal, probation, proof, proving, proving out, ratification, reassurance, reassurement, reinforcement, rough draft, rough sketch, sounding out, standard, strengthening, substantiation, support, supporting evidence, test, test case, touchstone, trial, try, undergirding, validation
security, guaranty, guarantee, gage, warranty, bond, tie, pledge, plight, mortgage, collateral, debenture, hypothecation, bill of sale, lien, pawn, pignoration, real security, vadium, stake, deposit, earnest, handsel, caution, promissory note, bill, bill of exchange, I, O, U, personal security, covenant, specialty, parole, acceptance, indorsement, signature, execution, stamp, seal, sponsor, cosponsor, sponsion, sponsorship, surety, bail, mainpernor, hostage, godchild, godfather, godmother, recognizance, deed of indemnity, covenant of indemnity, authentication, verification
, warrant, certificate, voucher, docket, doquet, record, probate, attested copy, receipt, acquittance, quittance, discharge, release, muniment, title deed, instrument, deed, deed poll, assurance, indenture, charter, charter poll, paper, parchment, settlement, will, testament, last will and testament, codicil, bonis avibus, gone where the woodbine twineth.
experiment, essay, analysis, screen, trial, tentative method, t=atonnement, verification
, probation, experimentum crucis, proof, (demonstration), criterion, diagnostic, test, probe, crucial test, acid test, litmus test, crucible, reagent, check, touchstone, pix, assay, ordeal, ring, litmus paper, curcuma paper, turmeric paper, test tube, analytical instruments, empiricism, rule of thumb, feeler, trial balloon, pilot balloon, messenger balloon, pilot engine, scout, straw to show the wind, speculation, random shot, leap in the dark, analyzer, analyst, assayist, adventurer, experimenter, experimentist, experimentalist, scientist, engineer, technician, subject, experimentee, guinea pig, experimental animal, protocol, experimental method, blind experiment, double-blind experiment, controlled experiment, poll, survey, opinion poll, epidemiological survey, retrospective analysis, retrospective survey, prospective survey, prospective analysis, statistical analysis, literature search, library research, tryout, audition, discovery, measurement, evidence, deduction, induction, abduction, experimental, empirical, probative, probatory, probationary, provisional, analytic, docimastic, tentative, unverified, unproven, speculative, untested, on trial, under examination, on probation, under probation, on one's trial, on approval, check it out, give it a try, see how it goes, Run it up the flagpole and see who salutes.