Rock-hard synonyms | adjectives

Synonyms for Rock-hard as an Adjective

• tough

  hard like rock
• flinty

  hard like rock
• impenetrable

  hard like rock
• indestructible

  hard like rock
• unbreakable

  hard like rock
• adamantine
• hard
• firm
• set
• frozen
• concrete
• rigid
• solidified
• dense
• compact
• compacted
• rock-solid
• unyielding
• dimensional
• stable
• strong
• sturdy
• substantial
• tight
• close
• heavy
• hulk
• hunk
• husky
• material
• rock
• sound
• thick
• brick wall
• concentrated
• consolidated
• fixed
• hefty
• massed
• 

  physical
• rocklike
• rooted
• secure
• unshakable
• jellied
• congealed