(as) hard as stone
(as) hard as stone
Very hard. I can't use this pillow, it's hard as stone!
See also: hard, stone
Farlex Dictionary of Idioms.
- hard as a rock
- (as) hard as a rock
- harder than the back of God's head
- be hard at it
- hard going
- in the end
- come by
- honestly
- hard to come by
- hard to swallow