“Achilles heel” means ________?

To action a task; to initiate work

A hidden or secret strength or unrevealed advantage

To endure a painful or unpleasant situation that is unavoidable

A metaphor for a fatal weakness in spite of overall strength

“Achilles heel” means a metaphor for a fatal weakness in spite of overall strength.

It originates from Greek mythology, where Achilles had only one vulnerable spot despite being nearly invincible.