Refer everything upwards delaying entry initially (6)
I believe the answer is:
allude
'refer' is the definition.
(I've seen this before)
'everything upwards delaying entry initially' is the wordplay.
'everything' becomes 'all' (I've seen this before).
'initially' indicates taking the first letters.
The initial letters of 'upwards delaying entry' is 'ude'.
'all'+'ude'='ALLUDE'
(Other definitions for allude that I've seen before include "Refer (to) in passing" , "Mention in passing" , "Make reference to in passing" , "Suggest or call attention to indirectly" , "Make indirect reference (to)" .)