List - I | List - II | ||
(A) | apple of one's eye | (I) | all of a sudden |
(B) | to be all ears | (II) | Not able to hear well |
(C) | out of the blue | (III) | loved clearly |
(D) | hard of hearing | (IV) | to be very attentive |
The CEO's sudden resignation threw the board into a tailspin.
What does the idiom "threw into a tailspin" mean?