Solid and Solid as rock

Solid adjective - Based on sound reasoning or information.

Solid as rock and solid are semantically related In some cases you can replace phrase "Solid as rock" with "Solid", this terms are similar.

Nearby Words: solidify, solidly, solidity, solidified

Solid and solid as rock are semantically related in fastened topic. You can use "Solid" instead an adjective phrase "Solid as rock", if it concerns topics such as stable, constant.