IPA: /ˈliːfiər/
KK: /ˈliːfiər/
Having more leaves or being more full of leaves than something else.
The garden looks leafier in the spring when all the plants are blooming.
Leafier → It is formed from "leaf" (from Old English *leaf*, meaning the foliage of a plant) and "-ier" (a comparative suffix indicating more). The word "leafier" means having more leaves or being more full of foliage than something else.
Think of 'leaf' as the part of a plant that is full of greenery, and the '-ier' means more. So, when something is leafier, it has more leaves.
No commonly confused words.