chū​qí​bù​yì

to take someone by surprise

Senses

出其不意 chū​qí​bù​yì (also chū​qí​bú​yì) to take someone by surprise

to act when the other party is least expecting it (idiom); to catch someone off guard

References

synonym 出其不意/出其不意 攻其无备/攻其無備
synonym 攻其无备/攻其無備 出其不意/出其不意