Definition

Not based on any solid or reliable basis; lacking support or justification.

Example

His argument was foundationless and failed to convince anyone.

Conversation

Did you hear that rumor about the new project?

Yeah, but it seems pretty foundationless to me.

I agree, it feels like there's no real evidence behind it.

Exactly! It's best not to take it too seriously.

Synonyms & Antonyms

Root Explanation

Foundationless → It is formed from "foundation" (from Old French *fundacion*, meaning the act of founding or establishing) and "-less" (meaning without). The word "foundationless" means without a foundation or basis.

Memory Tip

Think of something that is 'without' ('-less') a solid 'foundation' — that’s why foundationless means lacking a base.

Visually Confused Words