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rock-hard

  • as inadamant
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Synonyms for rock-hard

adj hard like rock
  • tough
  • adamantine
  • flinty
  • impenetrable
  • indestructible
  • rock-hard
  • unbreakable

Antonyms for rock-hard

  • flexible
  • pliant
  • soft
  • submissive
  • supple
  • yielding
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.