Synonyms of unconvincing

Adjective

1. unconvincing (vs. convincing), flimsy, unpersuasive, incredible#1, unbelievable

usage: not convincing; "unconvincing argument"; "as unconvincing as a forced smile"

2. improbable, unbelievable, unconvincing, unlikely, implausible (vs. plausible)

usage: having a probability too low to inspire belief