Dad and young lady going around everywhere (6)
I believe the answer is:
passim
'everywhere' is the definition.
(thesaurus)
'dad and young lady going around' is the wordplay.
'dad' becomes 'pa' (pa can mean someone's father).
'and' is a charade indicator (letters next to each other).
'young lady' becomes 'miss' (term of address for a young woman).
'going around' says the letters should be written backwards.
'miss' reversed gives 'ssim'.
'pa'+'ssim'='PASSIM'
(Other definitions for passim that I've seen before include "(Lit.) throughout, everywhere" , "Throughout (a piece of writing) - frequently cited" , "(Of references) at various places through the text" , "At many points in book" .)