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tested collapse: tested and proved to be reliable; tested and proved useful or correct; "a tested method"

open-and-shut collapse: so obvious as to be easily solved or decided; "an open-and-shut case"

proved collapse: established beyond doubt; "a proven liar"; "a Soviet leader of proven shrewdness"

ascertained collapse: discovered or determined by scientific observation; "variation in the ascertained flux depends on a number of factors"; "the discovered behavior norms"; "discovered differences in achievement"; "no explanation for the observed phenomena"

certified collapse: endorsed authoritatively as having met certain requirements; "a certified public accountant"; holding appropriate documentation and officially on record as qualified to perform a specified function or practice a specified skill; "a registered pharmacist"; "a registered hospital"; having quality or payment or delivery guaranteed; "certified milk"; "certified check"; "certified mail"

assured collapse: marked by assurance; exhibiting confidence; "she paints with an assured hand"; characterized by certainty or security; "a tiny but assured income"; "we can never have completely assured lives"

determinate collapse: precisely determined or limited or defined; especially fixed by rule or by a specific and constant cause; "a determinate distance"; "a determinate number"; "determinate variations in animals"; not continuing to grow indefinitely at the apex; "determinate growth"

determined collapse: having been learned or found or determined especially by investigation; characterized by great determination; "a struggle against a determined enemy"; determined or decided upon as by an authority; "date and place are already determined"; "the dictated terms of surrender"; "the time set for the launching"; devoting full strength and concentrated attention to; "made continued and determined efforts to find and destroy enemy headquarters"

established collapse: introduced from another region and persisting without cultivation; brought about or set up or accepted; especially long established; "the established social order"; "distrust the constituted authority"; "a team established as a member of a major league"; "enjoyed his prestige as an established writer"; "an established precedent"; "the established Church"; shown to be valid beyond a reasonable doubt; "the established facts in the case"; securely established; "an established reputation"; "holds a firm position as the country's leading poet"

settled collapse: not changeable; "a period of settled weather"; established in a desired position or place; not moving about; "nomads...absorbed among the settled people"; "settled areas"; "I don't feel entirely settled here"; "the advent of settled civilization"; established or decided beyond dispute or doubt; "with details of the wedding settled she could now sleep at night"

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