Definition of "tried and true" []

• Well-established and tested; known to work or succeed based on extensive experience. (adjective)

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• "I felt very lucky, for I already had a nucleus, tried and true for eight years, headed by Susan in the office and Laurie Firestone in the house."
• "We have developed a 30-day job-getting program that applies time management and structure to tried and true techniques that have helped millions of people find good jobs."
• "King Olmigon had insisted that this plan be abandoned — simply because it was so tried and true as to be obvious."