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

The play’s supernatural subtext was always a cheap theatrical gimmick, unconvincing and unworthy of Wilson’s seriousness about black Americans escaping imposed Christianity and developing their own skepticism. —Armond White, National Review, 27 Dec. 2024

The Kremlin tends to play down these attacks, and has a history of offering unconvincing explanations for massive explosions that sometimes result. —Laura King, Los Angeles Times, 27 Dec. 2024

There’s been no end of change since the firm bought shares in United, and key decisions will now undergo the stress test — the biggest of them the unconvincing retention of Erik ten Hag as manager. —Phil Hay, The Athletic, 16 Aug. 2024

Despite his defense, the jury found his story unconvincing, leading to his conviction on espionage charges. —Yaakov Katz, Newsweek, 28 Nov. 2024

Word History

First Known Use

1653, in the meaning defined above