Sap (5)
'sap' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for resin that I've seen before include "eg Rosin" , "Glue" , "Sticky stuff for siren" , "Viscous fluid from tree sap" , "Risen (anag.)" .)
'sap' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for juice that I've seen before include "Fruit drink" , "Fruity liquid" , "Liquid from fruit and vegetable" , "fuel" , "Energy" .)
'sap' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for enervate that I've seen before include "Make weak" , "Cause to lose vitality, exhaust" , "Spiritless" , "Cause to feel drained of energy" , "Take strength from" .)
'sap' is the definition.
(I know that sap is a kind of the undermine)
This is all the clue.
(Other definitions for undermine that I've seen before include "Subvert or weaken gradually" , "Sabotage; subvert" , "Weaken, sap" , "Burrow below" , "Erode the base or foundation of" .)