Toffee-nosed woman drawn to another not all there? (2-2-2)
I believe the answer is:
la-di-da
'toffee-nosed' is the definition.
(both can mean pretentious or snobbish)
'woman drawn to another not all there?' is the wordplay.
I cannot quite see how this works, but
'woman' could be 'ida' and 'ida' is found in the answer.
The remaining letters 'lad' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...
(Other definitions for la-di-da that I've seen before include "Pretentious, snobbish" , "I'd a lad with affected manner or pronunciation" , "Informally, having affected manner of pronunciation" , "Affectedly genteel" , "Hoity-toity" .)