Unfounded

Adjective

Definition: Having no foundation or basis in fact.

Synonyms: Baseless, Groundless, Unsubstantiated

Antonyms: Founded, Grounded, Supported

Examples:

The rumors of their affair were completely unfounded.
The accusations against him were proven to be unfounded.

Mnemonics:

"Unfounded" can be broken down into "un-" (not) and "founded" (having a foundation), so it means something without a foundation.

Etymology:

Origin:

The word "unfounded" is a combination of the prefix "un-" (indicating negation or absence) and "founded" (having a foundation). It originated in the early 17th century.

Historical Usage:

The usage and meaning have remained consistent since its origin.

Related Idioms:

Idiom:

"Unfounded accusation"

Explanation:

Referring to an accusation that lacks evidence or has no basis in reality.

Misconceptions:

Misconception:

Confusing "unfounded" with "ungrounded."

Explanation:

While both words imply a lack of basis, "unfounded" specifically refers to lacking factual support, while "ungrounded" can also refer to being emotionally or mentally unstable.