Achilles' heel - Achilles' heel means a weak point in a thing, person, system, or anything such as this. This weak point can be fatal because it can lead to a defeat or failure. It is after the name of the famous warrior of Troy who was killed due to injury in his heel.
1. Greg is the Achilles' heel of their team, he is really a weak person.
2. Every thief is clever in his own but always has an Achilles' heel.
3. Why not hit at his Achilles' heel only, may he be defeated.
4. Dancing is his Achilles' heel, ask him to dance, he won't, and he will be insulted above all.
5. The Achilles' heel of LG mobile phones is their sound quality, they shall do something for the betterment of the sound quality.