unconvincing

adjective

un·​con·​vinc·​ing ˌən-kən-ˈvin(t)-siŋ 

: not convincing : implausible

an unconvincing argument

unconvincingly

ˌən-kən-ˈvin(t)-siŋ-lē 

adverb

unconvincingness noun

Synonyms

• fantastic
• fantastical
• implausible
• inconceivable
• incredible
• incredulous
• unbelievable
• uncompelling
• unconceivable
• unimaginable
• unthinkable

Examples of unconvincing in a Sentence

His arguments for changing the rules were unconvincing.

a novel with unconvincing characters

Recent Examples on the Web

Shipley, the editorial-page editor, made the call, on the unconvincing ground that the cartoon was duplicative—Eugene Robinson had written a column on the billionaires’ pilgrimages to Mar-a-Lago, and another one was in the works. —Ruth Marcus, The New Yorker, 12 Mar. 2025

The evidence is similarly unconvincing for vitamin C and zinc. —Katie Mogg, New York Times, 24 Feb. 2025

England were motoring towards a potential total of 400 as Duckett and Joe Root rebuilt after Phil Salt and Jamie Smith played loose shots in unconvincing cameos. —Tim Ellis, Forbes, 23 Feb. 2025

But Malaparte’s identification with Chateaubriand figures among his several unconvincing self-mythologies. —Paul Berman, airmail.news, 22 Feb. 2025

Word History

First Known Use

1653, in the meaning defined above

Rhymes for unconvincing

• convincing
• evincing
• mincing
• rinsing
• wincing