Having thick, tufted growth; bushy or fluffy (describing hair, fur, foliage, etc.). A mimetic word for a dense, soft appearance or texture.
彼はふさふさの髪をしている。
He has thick, bushy hair.
庭の木が春になってふさふさと葉を茂らせた。
The trees in the garden put out lush, bushy leaves in spring.
猫のしっぽはふさふさで触ると気持ちいい。
The cat's tail is fluffy and feels nice to touch.