Concrete/ˈkɑːnkriːt,kɑːnˈkriːt/ Definition 1 of 3Pro Tip 1/3Physically Exist Use 'concrete' to describe things that you can touch or see, not abstract concepts. Her support was concrete, evidenced by her consistent help. Pro Tip 2/3Certainty and Clarity 'Concrete' often implies something is clear and certain, without any doubt. We saw concrete proof that the policy was working. Pro Tip 3/3Not General Instead of something general, 'concrete' suggests specific and detailed information. Please provide concrete examples to support your thesis.