rock-hardadjective
uk/ˌrɒkˈhɑːd/us/ˌrɑːkˈhɑːrd/extremely hard:
I can't eat this cake - it's rock-hard.
Thesaurus: synonyms and related words
Hard and firm
- (as) stiff/straight as a ramrod idiom
- adamantine
- cast iron
- congeal
- crisp
- crispy
- crunchy
- fossilized
- hard
- harden
- horny
- ossification
- ossify
- petrified
- ramrod
- solid
- stiff
- stiffness
- temper
- unyielding
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