Sentence:  Meanwhile Nanny Broome was recovering from her <WSD>initial</WSD> panic and seemed anxious to make up for any kudos she might have lost, by exerting her personality to the utmost. She took the policeman's helmet and placed it on a chair, and unfolded his tunic to shake it and fold it up again for him. 
Meaning of the word marked with <WSD> tags:  Chronologically first, early; of or pertaining to the beginning, cause or origin.