Careful (8)
'careful' is the definition.
(associated in meaning)
This is all the clue.
(Other definitions for cautious that I've seen before include "safe" , "Tentative" , "Wary or prudent" , "Careful to avoid dangers" , "Chary of" .)
'careful' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for guarded that I've seen before include "Cagey or protected" , "with escort" , "Cautious - or protected" , "Kept watch over" , "Protected from a drudge" .)
(Another definition for watchit that I've seen is " be careful!".)