1. unconvincing - Adjective
2. unconvincing - Verb
3. unconvincing - Adjective Satellite
not convincing
having a probability too low to inspire belief
Source: WordNetMerely corroborative detail, intended to give artistic verisimilitude to an otherwise bald and unconvincing narrative. W. S. Gilbert
A likely impossibility is always preferable to an unconvincing possibility. Aristotle
For the purposes of poetry a convincing impossibility is preferable to an unconvincing possibility. Aristotle
It was a very British and utterly unconvincing performance. Agatha Christie
I'm not a very big fan of 'Slumdog Millionaire.' I think it's visually brilliant. But I have problems with the story line. I find the storyline unconvincing. Salman Rushdie
a flimsy argument Source: Internet