unsubstantiated
unsubstantiated adjective: lacking substantiation; without evidence. Also the simple past and past participle of unsubstantiate.
Adjective
unsubstantiated (comparative more unsubstantiated, superlative most unsubstantiated)
- Lacking substantiation; without evidence.
- Such hedging is necessitated by the lack of in-depth knowledge of the contents, which also gives free rein to the scripting of unsubstantiated factoids concerning the book.2018, James Lambert, “Setting the Record Straight: An In-depth Examination of Hobson-Jobson”, in International Journal of Lexicography, volume 31, number 4, →DOI, page 487
- Synonyms:
- baseless, idle, footless, groundless, unfounded, ungrounded, unjustified, unproved, unproven, unsupported
Also used as
unsubstantiated is also the simple past and past participle of unsubstantiate.
Synonyms of unsubstantiated
Forms of unsubstantiated
| comparative | more unsubstantiated |
|---|---|
| superlative | most unsubstantiated |
Origin of unsubstantiated
From un- + substantiated.
From unsubstantiate + -ed.
Words formed from unsubstantiated
Questions about unsubstantiated
- What does unsubstantiated mean?
- Unsubstantiated means lacking substantiation; without evidence.
- What part of speech is unsubstantiated?
- Unsubstantiated is an adjective.
Words near unsubstantiated in the dictionary
Source and license
Adapted from Wiktionary: unsubstantiated (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Pronunciation audio from Wikimedia Commons, each file under its own free license: en-us-unsubstantiated.ogg.
Cite this entry: “unsubstantiated.” Word.ws, https://word.ws/unsubstantiated. Based on Wiktionary, CC BY-SA 4.0.