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Etymology

dubious

/ˈd(j)uːbiəs/

adjective

Origin

Latin

dubius — wavering, uncertain

Overview

Meaning Now

  • Hesitating or doubting; not to be relied upon; suspect.
  • Morally suspect; of questionable value or quality.

Literal older meaning

wavering between two opinions

Language path

Latin → Middle English → English

Earliest form

dubious

Earliest period

16th century

Journey

The word stems from the PIE root *duo (two), reflecting the psychological state of being pulled between two different viewpoints or paths, which results in uncertainty.

Evolution

  1. Proto-Indo-European

    duo

    “two”

    Representing the state of being split in two or divided in opinion.

  2. Latin

    dubium

    “doubt”

  3. Latin

    dubius

    “uncertain, doubtful”

  4. English

    dubious

    “full of doubt”

Connections

Word parts

dubi-

root

doubt

-ous

suffix

full of; characterized by

Related across languages

  • French

    douteux

    doubtful

  • Spanish

    dudoso

    doubtful

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