Anticipate a hold-up (5)

I believe the answer is:

await

I'm a little stuck... Click here to teach me more about this clue!

'anticipate' is the definition.
(I've seen this before)

'a hold-up' is the wordplay.
'hold up' becomes 'wait' (synonyms. I am not sure about the 'up' bit.).
'a'+'wait'='AWAIT'

Can you help me to learn more?

(Other definitions for await that I've seen before include "Expect, anticipate" , "Look for (something to happen)" , "Look forward to" , "Hid a microphone in; bothered" , "Look for (future event)" .)

I've seen this clue in The Mirror.

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