Unfounded
adj
adj ·3 syllables ·Moderate ·High school level
Definitions
Adjective
- 1 Having no strong foundation; not based on solid reasons or facts. not-comparable
"an unfounded report; unfounded fears"
- 2 Not having been founded or instituted. not-comparable
"Even the great world as yet undiscovered, the cities as yet unfounded, and the history as yet unwritten, are lost: fallen from the beginning."
- 3 Bottomless. not-comparable, obsolete
"[…] from them I go This uncouth errand sole, and one for all My self expose, with lonely steps to tread Th’ unfounded deep […]"
Adjective
- 1 without a basis in reason or fact wordnet
Example
More examples"That's a completely unfounded rumor."
Etymology
From un- + founded.
More for "unfounded"
Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.