Idiots initially loiter without point in a perfect world (7)
I believe the answer is:
ideally
'in a perfect world' is the definition.
(I've seen this in another clue)
'idiots initially loiter without point' is the wordplay.
'initially' indicates taking the first letters.
'loiter' becomes 'dally' (I've seen this in another clue).
'without' means one lot of letters goes inside another ('without' can be similar in meaning to 'outside').
'point' becomes 'E' (compass point).
The initial letter of 'idiots' is 'i'.
'dally' going around 'e' is 'deally'.
'i'+'deally'='IDEALLY'
(Other definitions for ideally that I've seen before include "in optimal way" , "In a perfect world, the best possible situation" , "for best results" , "In perfect circumstances" , "Perfectly; most suitably" .)