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Synonyms

specious

American  
[spee-shuhs] / ˈspi ʃəs /

adjective

  1. apparently good or right though lacking real merit; superficially pleasing or plausible.

    specious arguments.

    Antonyms:
    genuine
  2. pleasing to the eye but deceptive.

    Synonyms:
    misleading, false
    Antonyms:
    genuine
  3. Obsolete. pleasing to the eye; fair.


specious British  
/ ˈspiːʃəs /

adjective

  1. apparently correct or true, but actually wrong or false

  2. deceptively attractive in appearance

"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

Synonym Usage

See plausible.

Other Word Forms

Etymology

Origin of specious

First recorded in 1350–1400; Middle English, from Latin speciōsus “fair, good-looking, beautiful,” equivalent to speci(ēs) ( see species) + -ōsus adjective suffix; see -ous

Compare meaning

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Explanation

Use specious to describe an argument that seems to be good, correct, or logical, but is not so. We live on the earth, therefore the earth must be the center of the universe. This has been proven to be a specious theory of the solar system. Specious is pronounced "SPEE-shuhs." Something that is specious is attractive in a deceptive way, and if you follow the word's etymology, you'll see why. In Middle English, this adjective meant "attractive," from Latin speciōsus, "showy, beautiful," from speciēs, "appearance, kind, sort."

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Vocabulary lists containing specious

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.

Specious ones to the left, weird ones to the right—all arise from motivated reasoning.

From The Wall Street Journal • Dec. 23, 2025

"Specious and spurious legal bullying of artists should be vigorously opposed, and that opposition must begin first and foremost with all of us in the New York Theatre community," the letter says.

From Seattle Times • Jul. 19, 2012

Specious, spē′shus, adj. that looks well at first sight: showy: plausible: appearing actual, not merely imaginary.—ns.

From Chambers's Twentieth Century Dictionary (part 4 of 4: S-Z and supplements) by Various

Specious enough is that argument: but shortsighted more than enough. 

From Sermons for the Times by Kingsley, Charles

Specious, speculative; given to eloquence, diplomacy, and the windy instead of the solid arts;—always short of money for one thing.

From History of Friedrich II of Prussia — Volume 02 by Carlyle, Thomas

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