Stick offer in as expected, initially (5)
I believe the answer is:
abide
'stick' is the definition.
(thesaurus)
'offer in as expected initially' is the wordplay.
'offer' becomes 'bid' ('bid' can be a synonym of 'offer').
'in' means one lot of letters goes inside another.
'initially' says to take the initial letters.
The initial letters of 'as expected' is 'ae'.
'bid' going inside 'ae' is 'ABIDE'.
(Other definitions for abide that I've seen before include "Tolerate - dwell" , "live in the past?" , "Tolerate; live" , "Hack" , "Endure, tolerate" .)