English Lexicon

Untrustworthy

/ʌnˈtrʌstˌwɜr.ði/
adjectiveCEFR B2 (Upper)Top #1500 frequency
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Comprehensive Definitions & Senses

2 senses
As adjective
  1. 1

    Not able to be relied on as honest or truthful.

    "He had a reputation for being untrustworthy, often changing his story."
  2. 2

    Not deserving of trust or confidence.

    "The untrustworthy nature of the source raised doubts about the information provided."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The word 'untrustworthy' is formed from the prefix 'un-' meaning 'not' and the base word 'trustworthy', which itself is derived from 'trust' (Old Norse 'traust') and 'worthy' (Old English 'weorþe'). The combination reflects a historical evolution from the notion of reliability to its negation.

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