Webster's Revised Unabridged Dictionary · 1913

Cautious

Cautious , adjective

[Compare Latin cautus, from caver. See Caution.]

Attentive to examine probable effects and consequences of acts with a view to avoid danger or misfortune; prudent; circumspect; wary; watchful; as, a cautious general.
Cautious feeling for another's pain. — Byron
Be swift to hear; but cautious of your tongue. — Watts