Confound the girl - she gets nothing right! (5)
I believe the answer is:
floor
'confound the girl' is the definition.
'floor' can be an answer for 'confound' (thesaurus). I'm not certain of the 'the girl' bit.
'she gets nothing right' is the wordplay.
'she' becomes 'flo' ().
'gets' says to put letters next to each other.
'nothing' becomes 'o' (looks like zero - 0).
'right' becomes 'r' (common abbreviation).
'flo'+'o'+'r'='FLOOR'
Can you help me to learn more?
(Other definitions for floor that I've seen before include "American's story" , "Sea bottom; baffle" , "Disconcert" , "Minimum level or sea bottom" , "American story" .)