Brittle/ˈbrɪtl/ Definition 1 of 3Pro Tip 1/3Physical Weakness Used to describe objects that can break due to lack of strength or structural integrity. The brittle branches snapped in the storm. Pro Tip 2/3Age Deterioration Implies that an object may become brittle over time due to aging or wear. The brittle pages of the ancient book crumbled to touch. Pro Tip 3/3Careful Handling Suggests extra caution should be used when dealing with brittle items to prevent damage. Handle the brittle crystal vase with care.