Definition

A basic and essential part of something that supports or helps to build it, like a stone placed at the corner of a building.

Example

Trust is the cornerstone of any successful relationship.

Conversation

Have you heard about the new community center they're building?

Yeah, I read that it's going to be a real cornerstone for local activities.

Exactly! It should really bring everyone together.

I can't wait to see the opening ceremony; it'll be a great event.

Synonyms & Antonyms

Root Explanation

Cornerstone → It is formed from "corner" (from Old French *corniere*, meaning the angle or edge) and "stone" (from Old English *stan*, meaning a solid mineral matter). The word "cornerstone" refers to a stone that forms the base of a corner of a building, symbolizing a foundational element.

Memory Tip

Think of a 'corner' as the angle where two walls meet and 'stone' as a solid building material. This helps you remember that a cornerstone is a foundational stone at the corner of a structure.

Visually Confused Words