'without foundation' definitions:
Synonyms of 'without foundation'
From: Moby Thesaurus
- baseless,
- built on sand,
- empty,
- groundless,
- idle,
- ill-founded,
- not well-founded,
- unbased,
- unfounded,
- ungrounded,
- unsupportable,
- unsupported,
- unsustainable,
- unsustained,
- untenable,
- unwarranted,
- vain,
- without basis