octodactyl

Example:The idea of an octodactyl is quixotic in the sense that it is purely fictional and not grounded in reality.

Definition:Surprising, somewhat unreasonable, or eccentric, often related to characters in fiction who are unrealistic and impractical. However, there is no direct antonym for octodactyl in common usage, as it is specifically defined by its characteristic of having eight fingers or toes, and not by the number of fingers or toes.