leafy /ˈliːfi/ adjective5 •Covered with leaves.leafy trees •Containing much foliage.The Earth is facing a climate crisis, but it’s also getting greener and leafier. According to new research, the rise is largely courtesy of China and India. — 2019 •Wealthy, middle- or upper-class.They live in a beautiful house in a leafy suburb. •In the form of leaves (of some material). •Resembling a leaf.Another option is to wash spinach and other leafy greens thoroughly in running water before eating them. — 2021 formsleafier · leafiest