Is it possible Spanish lady would start to sap strength? (10)
I believe the answer is:
mightiness
'strength?' is the definition.
(mightiness is a kind of strength)
'is it possible spanish lady would start to sap' is the wordplay.
I cannot quite understand how this works, but
'it' could be 't' (abbreviation. e.g. in 'tis) and 't' is present in the answer.
'lady' could be 'ines' (I have seen 'Spanish lady' mean 'ines' so perhaps 'lady' could also mean 'ines') and 'ines' is located in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for mightiness that I've seen is " power".)