circumspect
Concise Oxford English Dictionary © 2008 Oxford University Press:
circumspect/ˈsɜːkəmspekt/
▶adjective cautious or prudent.
– derivatives
circumspection noun,
circumspectly adverb.
circumspection noun,
circumspectly adverb.
– origin ME: from L. circumspectus, from circumspicere ‘look around’.
'circumspect' also found in these Oxford entries:

