Splendid point female ignored, being silly (5)
I believe the answer is:
inept
'silly' is the definition.
(I've seen this before)
'splendid point female ignored' is the wordplay.
'splendid' becomes 'fine' (I've seen this in other clues).
'point' becomes 'pt' (abbreviation for point).
'female' becomes 'f' (abbreviation).
'ignored' indicates named letters should be taken away.
'fine'+'pt'='finept'
'finept' with 'f' taken out is 'INEPT'.
'being' acts as a link.
(Other definitions for inept that I've seen before include "Unsuitable, clumsy" , "Silly or senseless" , "Incompetent and ineffectual" , "Incompetent or gauche" , "Ham-fisted" .)