cast in concrete
Fixed beyond alteration
Cast in concrete means fixed and unchangeable, impossible to modify once established.
The image comes from how concrete hardens permanently into whatever shape it's poured.
Often used in the negative to suggest flexibility: The schedule isn't cast in concrete—we can adjust if needed.
Also appears as *set in concrete* or *cast in stone*.
- set in stonePermanently fixed, unalterable
- deep-rootedFirmly and long established
- carved in stoneFixed beyond alteration
- written in stonePermanently established, unalterable
- finalizedMade permanent and complete
done deal · signed and sealed · immutable · cement · irreversible · no turning back · ironclad · irrevocable · final answer · fixed · nailed down · immovable · hard and fast · formwork · aggregate · unalterable · curing · hardwired
cast in concretetentative
Uncertain and provisional
provisional · subject to change · flexible · temporary · up in the air
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