Keen briefly on goddess from The Emergency (6)
I believe the answer is:
crisis
'the emergency' is the definition.
(thesaurus)
'keen briefly on goddess' is the wordplay.
'keen' becomes 'cry' (I've seen this in other clues).
'briefly' means to remove the last letter.
'on' is a charade indicator (letters next to each other).
'goddess' becomes 'isis' (I've seen this before).
'cry' with its last letter taken off is 'cr'.
'cr'+'isis'='CRISIS'
'from' acts as a link.
(Other definitions for crisis that I've seen before include "Time of intense difficulty or danger" , "Turning point in illness" , "Crucial stage or turning point" , "Crucial stage in a series of events" , "Turning point or crux" .)