1. (adjective) beyond belief or understanding

• incredible

2. (adjective) having a probability too low to inspire belief

• improbable
• unconvincing
• unlikely

1. (adjective) beyond belief or understanding

• astounding
• dumbfounding
• dumfounding
• fabulous
• improbable
• marvellous
• marvelous
• tall
• undreamed
• undreamed of
• undreamt
• undreamt of
• unimagined

2. (adjective) having a probability too low to inspire belief

• implausible

1. (adjective) beyond belief or understanding

• flimsy
• unconvincing
• implausible
• incredulous
• unthinkable

1. (adjective) beyond belief or understanding

• believable
• credible

1. (adjective) beyond belief or understanding

• incredibility
• incredibility
• incredibleness
• incredibleness

2. (adjective) having a probability too low to inspire belief

• improbability
• improbableness
• unlikelihood
• unlikeliness