from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Having no ground or foundation; unsubstantiated: synonym: baseless.

from The Century Dictionary.

  • Without ground or foundation; especially, having no adequate cause or reason; not authorized; baseless.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Without ground or foundation; wanting cause or reason for support; not authorized; false; baseless

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Without any grounds to support it; baseless.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective without a basis in reason or fact


from Wiktionary, Creative Commons Attribution/Share-Alike License

ground +‎ -less


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