Usually means: Lacking any basis or justification.
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We found 27 dictionaries that define the word Groundless:

General (24 matching dictionaries)
  1. groundless: Merriam-Webster
  2. groundless: Oxford Learner's Dictionaries
  3. groundless: American Heritage Dictionary of the English Language
  4. groundless: Collins English Dictionary
  5. groundless: Vocabulary.com
  6. Groundless, groundless: Wordnik
  7. groundless: Cambridge Advanced Learner's Dictionary
  8. groundless: Wiktionary
  9. groundless: Webster's New World College Dictionary, 4th Ed.
  10. groundless: The Wordsmyth English Dictionary-Thesaurus
  11. groundless: Infoplease Dictionary
  12. Groundless, groundless: Dictionary.com
  13. groundless: Cambridge Essential American English Dictionary
  14. Groundless: Online Plain Text English Dictionary
  15. groundless: Webster's Revised Unabridged, 1913 Edition
  16. groundless: Rhymezone
  17. Groundless: AllWords.com Multi-Lingual Dictionary
  18. groundless: Webster's 1828 Dictionary
  19. groundless: FreeDictionary.org
  20. groundless: Mnemonic Dictionary
  21. groundless: TheFreeDictionary.com
  22. groundless: Longman Dictionary of Contemporary English

Business (2 matching dictionaries)
  1. groundless: Merriam-Webster Legal Dictionary
  2. groundless: Legal dictionary

Computing (1 matching dictionary)
  1. groundless: Encyclopedia

(Note: See groundlessly as well.)

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Definitions from Wiktionary (groundless)

▸ adjective:  Without any grounds to support it; baseless.

Similar:
baseless, unwarranted, unfounded, idle, unsupported, unbased, foundationless, causeless, sourceless, unsubstantiated, more...

Opposite:
founded, justified, valid, substantiated, supported

Types:
baseless, unfounded, unwarranted, unsubstantiated, more...

Phrases:
groundless rumour, more...

Adjectives:
such, main, proved, european, great, general, more, undue, present, likely, certain



▸ Words similar to Groundless

▸ Usage examples for Groundless

▸ Idioms related to Groundless

▸ Wikipedia articles (New!)

▸ Popular nouns described by Groundless

▸ Words that often appear near Groundless

▸ Rhymes of Groundless

▸ Invented words related to Groundless

Similar:
baseless, unwarranted, unfounded, idle, unsupported, unbased, foundationless, causeless, sourceless, unsubstantiated, more...

Opposite:
founded, justified, valid, substantiated, supported

Types:
baseless, unfounded, unwarranted, unsubstantiated, more...

Phrases:
groundless rumour, more...

Adjectives:
such, main, proved, european, great, general, more, undue, present, likely, certain



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