Weaken (6)
'weaken' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for impair that I've seen before include "Spoil, degrade" , "Hobble" , "Damage or handicap" , "Make worse or less effective" , "Damage or injure" .)
'weaken' is the definition.
(I know that dilute is a kind of the weaken)
This is the entire clue.
(Other definitions for dilute that I've seen before include "Adulterate" , "not neat" , "having less concentration" , "Add water to another liquid" , "Thin out, make less strong" .)
'weaken' is the definition.
(I know that enfeeble is a kind of the weaken)
This is the entire clue.
(Other definitions for enfeeble that I've seen before include "Make weak" , "Take sting from" , "Weaken" .)
'weaken' is the definition.
(I know that enervate is a kind of the weaken)
This is the entire clue.
(Other definitions for enervate that I've seen before include "Cause to lose vitality, exhaust" , "Unnerve, unsettle" , "Spiritless" , "Debilitate" , "Take strength from" .)
'weaken' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ebb that I've seen before include "Not to wax" , "Fall back" , "Initially Mrs Browning's" , "(Water) recede" , "Tidal outflow" .)
'weaken' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for sap that I've seen before include "Enervate" , "Deplete, drain of resources" , "One is easily fooled" , "trench used in siege" , "tunnel" .)
'weaken' is the definition.
(debilitating is a kind of weakening)
This is the entire clue.
(Other definitions for debilitate that I've seen before include "Make very weak" , "Weaken" .)
'weaken' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for tire that I've seen before include "Weaken" , "Exhaust" , "one of four found on Chevrolet?" , "Wear out" , "Become fatigued" .)