Look for a delay (5)
I believe the answer is:
await
'look for' is the definition.
(thesaurus)
'a delay' is the wordplay.
'delay' becomes 'wait' ('wait' can be a synonym of 'delay').
'a'+'wait'='AWAIT'
(Other definitions for await that I've seen before include "Hid a microphone in; bothered" , "Remain in expectation for (an occurrence)" , "To be in store for (someone)" , "Look forward to" , "Look for (future event)" .)