Most bohemian gatherings won’t start on time (7)
I believe the answer is:
artiest
'most bohemian' is the definition.
(I've seen this in another clue)
'gatherings won't start on time' is the wordplay.
'gatherings' becomes 'parties' (party is a kind of gathering).
'won't start' means to remove the first letter.
'on time' becomes 't' (abbreviation. I am not sure about the 'on' bit.).
'parties' with its initial letter taken off is 'arties'.
'arties'+'t'='ARTIEST'
Can you help me to learn more?
(Other definitions for artiest that I've seen before include "Most pretentious" , "Most pretentiously aesthetic" .)