Dictionary.com
Thesaurus.com
Synonyms

unfounded

American  
[uhn-foun-did] / ʌnˈfaʊn dɪd /

adjective

  1. without foundation; not based on fact, realistic considerations, or the like.

    unfounded suspicions.

    Synonyms:
    unjustified, false, idle, groundless, unsubstantiated
  2. not established; not founded.

    the prophet of a religion as yet unfounded.


unfounded British  
/ ʌnˈfaʊndɪd /

adjective

  1. (of ideas, allegations, etc) baseless; groundless

  2. not yet founded or established

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • unfoundedly adverb
  • unfoundedness noun

Etymology

Origin of unfounded

First recorded in 1640–50; un- 1 + found 1 + -ed 2

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“There were unfounded statements about cooking the books, which were not true,” Wiatrowski said.

From The Wall Street Journal

It quickly became clear those fears were unfounded.

From Barron's

A Chinese Defense Ministry spokesman warned against “unfounded speculation,” referring back to an official statement that the probe concerns violations of party discipline and state law.

From The Wall Street Journal

In a letter to the police, seen by the BBC, their lawyers say the family are co-operating with "criminal proceedings", but maintain the allegations are "unfounded and unsupported by credible evidence".

From BBC

"Those fears are unfounded. Our long-term study of a state's population shows no connection between cash transfers and serious injury or death."

From Science Daily