See half cocked for more half-cockBrE /ˌhɑːf ˈkɒk/ 🔊NAmE /ˌhæf ˈkɑːk/ 🔊 noun●go off at ˌhalf-ˈcock(BrE, informal) to start before preparations are complete, so that the effect or result is not as it should be 没准备好就开始干,操之过急(因而效果或结果不好)