Completely pall? Not at first (3)

I believe the answer is:
all
'completely' is the definition.
(synonyms)
'pall? not at first' is the wordplay.
'not at first' means to remove the first letter.
'pall' with its initial letter taken away is 'ALL'.
(Other definitions for all that I've seen before include "Monopolist controls this" , "SECOND PART OF 8" , "Everything or everyone" , "and 18: 'Sing through -- --' (carol)" , "The lot, everyone" .)