Unfounded
Unfounded adjective - Having no basis in reason or fact.
Without substantiation and unfounded are semantically related. In some cases you can use "Without substantiation" instead an adjective "Unfounded".
Nearby Word: unfoundedly
Without substantiation
Unfounded and without substantiation are semantically related. You can use "Unfounded" instead an adjective phrase "Without substantiation".
Mutual synonyms
Related pairs
- bottomless and unfounded
- bottomless and without substantiation
- vain and unfounded
- vain and without substantiation
- flimsy and unfounded
- flimsy and without substantiation
- invalid and unfounded
- invalid and without substantiation
- unwarranted and unfounded
- unwarranted and without substantiation
- groundless and unfounded
- groundless and without substantiation
- gratuitous and unfounded
- gratuitous and without substantiation
Cite this Source
Without substantiation and Unfounded. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/unfounded/without_substantiation
Unfounded & Without substantiation. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/unfounded/without_substantiation>.
Without substantiation or Unfounded. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/unfounded/without_substantiation.
Google Ngram Viewer shows how "unfounded" and "without substantiation" have occurred on timeline