Gives up an office from a basic date (9)
I believe the answer is:
abdicates
'gives up an office' is the definition.
(I've seen this before)
'from a basic date' is the wordplay.
'from' indicates anagramming the letters (the anagram comes from the same letters).
'basic'+'date'='basicdate'
'basicdate' is an anagram of 'ABDICATES'.
(Other definitions for abdicates that I've seen before include "Retires" , "Gives up an office" .)