Fail-safe and Solid

Fail-safe adjective - Not likely to fail.

Solid and fail-safe are semantically related. In some cases you can use "Solid" instead an adjective phrase "Fail-safe".

Solid adjective - Based on sound reasoning or information.

Fail-safe and solid are semantically related. Sometimes you can use "Fail-safe" instead an adjective "Solid".

Nearby Words: solidify, solidly, solidity, solidified