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provide evidence for; stand as proof of; show by one's behavior, attitude, or external attributes; "His high fever attested to his illness"; "The buildings in Rome manifest a high level of architectural sophistication"; "This decision demonstrates his sense of fairness"
establish the validity of something, as by an example, explanation or experiment; "The experiment demonstrated the instability of the compound"; "The mathematician showed the validity of the conjecture"
to show, make visible or apparent; "The Metropolitan Museum is exhibiting Goya's works this month"; "Why don't you show your nice legs and wear shorter skirts?"; "National leaders will have to display the highest skills of statesmanship"