1. Growing in tufts or clusters 
2. Abounding with tufts

Derived forms: tuftier, tuftiest

• xxxv
• xxxvi
• xxxvii
• xxxviii
• XXY
• XXY-syndrome
• XY
• xylan
• Xylaria
• Xylaria mali
• Xylaria polymorpha
• Xylariaceae
• xylem
• rydberg
• rydberg constant
• rydberg unit
• Rydberg's penstemon
• rye
• rye bread
• rye ergot
• rye whiskey
• rye whisky
• ryegrass
• Rynchopidae
• Rynchops