Made it possible to lift key curse (7)
I believe the answer is:
enabled
'made it possible' is the definition.
I can't judge whether this definition defines the answer.
'lift key curse' is the wordplay.
'lift' says the letters should be written backwards.
'key' becomes 'del' (Delete on a keyboard).
'curse' becomes 'bane' (synonyms).
'del'+'bane'='delbane'
'delbane' back-to-front is 'ENABLED'.
'to' acts as a link.
Can you help me to learn more?
(Other definitions for enabled that I've seen before include "Facilitated or empowered" , "Qualified" , "Made possible, facilitated" , "Made competent" , "Permitted" .)