Are falsely taken by the child as grounds for (6)
I believe the answer is:
reason
'grounds for' is the definition.
'are falsely taken by the child' is the wordplay.
'falsely' indicates anagramming the letters.
'taken by' means one lot of letters go next to another.
'the child' becomes 'son' (male child).
'are' with letters rearranged gives 'rea'.
'rea'+'son'='REASON'
'as' is the link.
(Other definitions for reason that I've seen before include "Logic of senora" , "Motive or right thinking" , "Justification; sanity" , "Deduce" , "use of wit" .)