1.
[syn: baseless, groundless, idle, unfounded, unwarranted, wild]
The Collaborative International Dictionary of English v.0.48:
Baseless \Base"less\, a.
Without a base; having no foundation or support. "The
baseless fabric of this vision." --Shak.
[1913 Webster]
WordNet (r) 3.0 (2006):
baseless
adj 1: without a basis in reason or fact; "baseless gossip";
"the allegations proved groundless"; "idle fears";
"unfounded suspicions"; "unwarranted jealousy" [syn:
baseless, groundless, idle, unfounded,
unwarranted, wild]