" foundationless "

1: having no basis in reason or fact;

  * e.g., " ... a careful investigation proved that the charges were foundationless "

•  Synonyms : 

•  baseless,

•  groundless,

•  invalid,

•  nonvalid,

•  unfounded,

•  unreasonable,

•  unsubstantiated,

•  unsupported,

•  unwarranted

•  Antonyms : 

•  good,

•  hard,

•  just,

•  justified,

•  reasonable,

•  reasoned,

•  substantiated,

•  valid,

•  well-founded,

•  well-grounded

1: a public organization with a particular purpose or function;

  * e.g., " ... donated to a foundation that supported cancer research "

•  Synonyms : 

•  establishment,

•  institute,

•  institution

•  Antonyms : 

• (N/A)

2: an immaterial thing upon which something else rests;

  * e.g., " ... she had a good enough foundation in math to pursue an economics degree "

•  Synonyms : 

•  base,

•  basis,

•  bedrock,

•  bottom,

•  cornerstone,

•  footing,

•  ground,

•  groundwork,

•  keystone,

•  root,

•  underpinning,

•  warp,

•  warp and woof

•  Antonyms : 

• (N/A)