Caution (4)
'caution' is the definition.
(I know that caution is a more specific form of the action the warn)
This is all the clue.
(Other definitions for warn that I've seen before include "Give advance notice to" , "Sound the alarm" , "Make aware of danger" , "Notify of potential risk" , "Give a caution to" .)
'caution' is the definition.
(I know that wariness is a type of caution)
This is the entire clue.
(Other definitions for wariness that I've seen before include "Circumspection" , "Caution, watchfulnes" , "State of caution" .)
'caution' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for prudence that I've seen before include "Quality of being cautious and sensible, and a girl's name" , "economy" , "The girl for wisdom and forethought" , "Shrewdness in planning ahead" , "Discretion, caution" .)
'caution' is the definition.
(I know that caution can be written as caveat)
This is the entire clue.
(Other definitions for caveat that I've seen before include "'Caution, warning (6)'" , "Formal warning" , "Warning (of conditions)" , "A caution, proviso" , "Caution - qualification" .)