inconceivable (adjective)

1. It is inconceivable that Hercules could singlehandedly defeat the entire army.

2. According to the doctrine, it is inconceivable for mortal beings to comprehend the nature of God.

3. Wearing a winter coat in the scorching heat is inconceivable.

4. In the world of magic, it is inconceivable for a mere mortal to possess the power of teleportation.