The party, with a butler flitting about, gives one definite qualms (4,5)

'the' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'party with a butler flitting about gives one definite qualms' is the wordplay.
I cannot really see how this works, but
'party' could be 'do' (do is a kind of party) and 'do' is present in the answer.
'a' is found in the answer.
an anagram of 'butler' is 'relubt' which is within the remaining letters.
This accounts for all the letters.
This explanation may well be incorrect...

Can you help me to learn more?