caution

To treat something as not fully reliable or true.

To avoid becoming too close or too involved with someone or something.

to try something cautiously before committing fully to it

a reliable source of money that must be protected, not exploited to death

to act very carefully to avoid upsetting someone

to reconsider an action carefully before doing it

as an extra addition beyond what is strictly necessary

to form an opinion too quickly, before considering enough evidence