Leave poolside partygoers, missing a lot (6)

I believe the answer is:

depart

'leave' is the definition.
(I know that depart is a more specific form of leave)

'poolside partygoers missing a lot' is the wordplay.
'a lot' indicates the answer is hidden within the clue (a lot of the letters from the clue).
'DEPART' is hidden within 'poolside partygoers missing'.

(Other definitions for depart that I've seen before include "Go away or leave" , "Stray" , "Set out" , "Retire from" , "Quit" .)

I've seen this clue in The Times.

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