Expect a hold-up (5)
I believe the answer is:
await
'expect' is the definition.
(synonyms)
'a hold-up' is the wordplay.
'hold up' becomes 'wait' (I've seen this in another clue).
'a'+'wait'='AWAIT'
(Other definitions for await that I've seen before include "Look for (future event)" , "Look for; be in store" , "Hid a microphone in; bothered" , "Look for (something to happen)" , "Be ready for" .)