1. Hard as granite
   - granitic, granitelike, stony

See also: hard

• decry
• decrypt
• decryption
• decubitus
• decubitus ulcer
• Decumaria
• Decumaria barbara
• Decumaria barbata
• decumary
• decumbent
• decumbiture
• decuple
• decurrent
• decurved
• decussate
• decussation
• DEd
• dedicate
• dedicated
• dedicated file server
• dedication
• dedicator
• dedicatory
• dedifferentiate
• dedifferentiated