rock-hard
adjective
uk/ˌrɒkˈhɑːd/us/ˌrɑːkˈhɑːrd/extremelyhard:
极其坚硬的I can'teatthiscake- it's rock-hard.这块蛋糕我没法吃——硬得跟石头似的。
Hard and firm
- (as) stiff/straight as a ramrodidiom
- adamantine
- cast iron
- congealed
- crisp
- crisply
- erect
- firmness
- fossilized
- harden
- hardening
- hardness
- horny
- rigid
- rigidity
- rock-solid
- stiff
- stiffly
- stiffness
- tense