adjective.
Heedful of circumstances and potential consequences; prudent.
The Century Dictionary and Cyclopedia
Literally, looking about on all sides; hence, examining carefully all the circumstances that may affect, a determination; watchful on all sides; cautious; wary.
To look on all sides of; examine carefully; scrutinize.
the GNU version of the Collaborative International Dictionary of English
adjective.
Attentive to all the circumstances of a case or the probable consequences of an action; cautious; prudent; wary.