Participate or appear, as in cabaret (3)
I believe the answer is:
are
'participate or appear' is the definition.
I can't tell whether this defines the answer.
'in cabaret' is the wordplay.
'in' indicates the answer is hidden within the clue.
'ARE' is hidden in the letters of 'cabaret'.
'as' is the link.
Can you help me to learn more?
(Other definitions for are that I've seen before include "live" , "Is, in the plural" , "(We/they/you) exist" , "Era (anag.)" , "(We/you/they) exist" .)