Concrete

Definitions

Existing in a material or physical form; real rather than abstract.

A building material made from a mixture of broken stone or gravel, sand, cement, and water, which hardens to a stone-like mass.

Specific and definite; not general.

Examples

The sidewalk was made of poured concrete that had hardened over the weekend.

We need to come up with a concrete plan before we start the project.

Synonyms

tangible solid substantial physical real material definite

Antonyms

abstract intangible theoretical vague conceptual nebulous ideal