caution
noun
the trait of being cautious; being attentive to possible danger
“a man of caution”
Oppositesincautiona warning against certain acts
“a caveat against unfair practices”
Synonymscaveatjudiciousness in avoiding harm or danger
“he exercised caution in opening the door”
“he handled the vase with care”
the trait of being circumspect and prudent
Synonymscircumspection
verb
warn strongly; put on guard
Source: WordNet 3.1, Princeton University
