Answer:

GUARDED

AnswerCrossword Clue
GUARDEDKept a close eye on
GUARDEDCareful not to say too much
GUARDEDVigilant
GUARDEDCautious
GUARDEDPrudent
GUARDEDKept watch over
GUARDEDCautious.
GUARDEDCircumspect
GUARDEDUnwilling to say much
GUARDEDWatched over
GUARDEDKind of optimism