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English Lexicon

Well-founded

/ˌwɛlˈfaʊn.dɪd/
adjectiveCEFR C1 (Advanced)Top #8500 frequency
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Comprehensive Definitions & Senses

2 senses
As adjective
  1. 1

    Based on solid evidence, good reasoning, or satisfactory grounds; justifiable and legitimate.

    "Her fears about the safety of the bridge turned out to be entirely well-founded."
  2. 2

    Having a solid and stable basis or foundation.

    "The company's success is built upon a well-founded financial strategy."
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Thesaurus & Semantic Spectrum

Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

Derived from the adverb 'well' combined with the past participle of 'found' (from Old French 'fonder', ultimately from Latin 'fundare', meaning to lay a bottom or foundation). The compound has been used since the late 16th century to describe beliefs, suspicions, or arguments securely based on valid evidence, facts, or good reasoning.

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